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Heuer, Verena B; Inagaki, F; Morono, Yuki; Kubo, Y; Maeda, Lena; Expedition 370 Scientists (2018): Visual core description (VCD) from IODP Hole 370-C0023A [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.888885

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2018-04-23 • DOI registered: 2018-06-12

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Related to:
Heuer, Verena B; Inagaki, F; Morono, Yuki; Kubo, Y; Maeda, Lena; Expedition 370 Scientists (2017): Temperature Limit of the Deep Biosphere off Muroto. International Ocean Discovery Program Preliminary Report, International Ocean Discovery Program, https://doi.org/10.14379/iodp.pr.370.2017
Other version:
IODP Hole 370-C0023A, snapshot taken on 2018-05-14, J-CORES, SIO7 Data Center [dataset]. https://www.jamstec.go.jp/sio7/j-cores.data/370/C0023A/
Project(s):
Integrated Ocean Drilling Program / International Ocean Discovery Program (IODP)
Coverage:
Latitude: 32.366667 * Longitude: 134.966333
Date/Time Start: 2016-09-17T00:00:00 * Date/Time End: 2016-11-03T00:00:00
Minimum DEPTH, sediment/rock: 100.196 m * Maximum DEPTH, sediment/rock: 999.500 m
Event(s):
370-C0023A * Latitude: 32.366667 * Longitude: 134.966333 * Date/Time Start: 2016-09-17T00:00:00 * Date/Time End: 2016-11-03T00:00:00 * Elevation: -4776.0 m * Location: Nankai Trough * Campaign: Exp370 * Basis: Chikyu * Method/Device: Drilling/drill rig (DRILL) * Comment: 83 cores, from 189 to 871 mbsf.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Sample code/labelSample labelExpedition 370 ScientistsDSDP/ODP/IODP sample designationSample top
2 DEPTH, sediment/rockDepth sedmExpedition 370 ScientistsGeocode – Top Core depth (below sea floor) [m CSF-A]
3 Depth, top/minDepth topmExpedition 370 ScientistsTop Core depth (below sea floor) [m CSF-B]
4 Sample code/label 2Sample label 2Expedition 370 ScientistsDSDP/ODP/IODP sample designationSample bottom
5 Depth, bottom/maxDepth botmExpedition 370 ScientistsBottom Core depth (below sea floor) [m CSF-A]
6 Depth, bottom/maxDepth botmExpedition 370 ScientistsBottom Core depth (below sea floor) [m CSF-B]
7 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionVCD general sedimentological comment on Core
8 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
9 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
10 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
11 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
12 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionVCD general sedimentological comment on Section
13 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
14 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
15 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
16 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
17 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
18 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
19 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
20 Lithology/composition/faciesLithologyExpedition 370 ScientistsVisual descriptionCountinued
21 Time StampTime StampExpedition 370 ScientistsOf description
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4924 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Sample label
(Sample top, DSDP/ODP/IODP sam...)		2 
Depth sed [m]
(Top Core depth (below sea flo...)		3 
Depth top [m]
(Top Core depth (below sea flo...)		4 
Sample label 2
(Sample bottom, DSDP/ODP/IODP ...)		5 
Depth bot [m]
(Bottom Core depth (below sea ...)		6 
Depth bot [m]
(Bottom Core depth (below sea ...)		7 
Lithology
(VCD general sedimentological ...)		8 
Lithology
(Countinued, Visual description)		9 
Lithology
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Lithology
(Countinued, Visual description)		11 
Lithology
(Countinued, Visual description)		12 
Lithology
(VCD general sedimentological ...)		13 
Lithology
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Lithology
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Lithology
(Countinued, Visual description)		16 
Lithology
(Countinued, Visual description)		17 
Lithology
(Countinued, Visual description)		18 
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Lithology
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Lithology
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Time Stamp
(Of description)
370-C0023A-1F-1,0.0189.000189.000370-C0023A-1F-CC,21.0190.500190.760Drill breccia of mud within a sand and gravel matrix. Sand comprises igneous and volcanic lithic fragments with an intermediate mineralogical composition (biotite, plagioclase and brown amphiboles).Fine grained vitric-volcanic glass, black pumice and scoria present in both mud and sand. Mud contains angular silt grains and the clay fraction is the most abundant.2016-10-20T06:58:02
370-C0023A-1F-1,0.0189.000189.000370-C0023A-1F-1,155.0190.321190.550Observations made on core and sample residues and XCT for void identification and for missing intervals.0-40 cm: Matrix supported drill breccia comprising gravel and sand with large clasts of mud.Gravel and pebble-sized fragments c lithic fragments with an intermeadiate minerological composition (biotite, plagioclase and brown amphiboles).include igneous and volcaniFine grained vitric volcanic glass, black pummice and scoria present.Photomicrograph available.40 - 100 cm: Fine grained sand - observed only in X-CT. Few mudstone clasts > 4 cm dimater - few internal voids. Unlike mudstone clasts have spherical voids.Has X-CT density similar to fine grained sand found in core catcher100-140 cm: Matrix supported drill breccia as 0-40 cm but with metal fragments and less sand. Photomicrograph available.140-155 cm Fine grained sand.Inferred to be the same as the sand found in the core catcher (C0023A-1F-CC. has generally spherical voids implying voids developed after the expansion of the core.X-CT images illustrating links between void spaces and lithology available.2016-10-14T13:01:49
370-C0023A-1F-CC,0.0190.321190.550370-C0023A-1F-CC,21.0190.500190.760Observations made on core and sample residues and XCT for void identification and for missing intervals. 0-21 cm Fine grained volcanic sand. Inferred to be the same as the bottom-most sand from section 1.Sand contains angular to sub-angular igneous and volcanic lithic fragments with an intermeadiate minerological composition (biotite, plagioclase, brown amphiboles and sparse quartz).Fine sands-sized vitric volcanic glass, black pummice and scoria present.2016-10-14T07:59:43
370-C0023A-2F-1,0.0203.000203.000370-C0023A-2F-CC,8.5204.200204.200Drill breccias comprising clasts of mud within a sand matrix of volcaniclasts. Fragments of metal are observed. The sand interval is clast-poor and contains few clasts of mud. Drilling disturbance evident in sand as spherical voids. Similar to 1R-1.Compared to core 4F beneath, the gravel and sand present in core 2F is distinct in containing more scoria, pumice, and lava with mineralised vesicles. Small gravel clasts of both jasper and epidote present. A notably broad variety of lithoclasts.2016-10-20T06:45:36
370-C0023A-2F-1,0.0203.000203.000370-C0023A-2F-1,111.5204.115204.115Observations made on core and sample residues and XCT for void identification and for missing intervals. 0-4.5 cm Mixture of mud with minor sand. Spehrical voids and soupy texture.4.5- 37.6 cm Matrix supprted drill breccia similar to 1F-CC and 2F1 but mud clasts are hardened.37.5 -72.5 cm. Sand with gravel-sized clasts of mud. Spherical voids and soupy texture.Large void on side of core visible in X-CT showing that fluidised sand settled under gravity. Sand contains scoria and volcanic ash, as well as occasional clasts of epidote and black volcanic glass.Similar to sand in 1F-CC and 2R.Photomicrograph available72-90 cm Matrix supprted drill breccia similar to 1F-CC and 2F-1.90-111.0 cm Mud with some silt. Voids are elongated and follow the fabric expected for a micaceous mudrock.Sparse fragments of metal, confirmed by microscopy, indicate a drill breccia.Photomicrograph available2016-10-14T13:03:13
370-C0023A-2F-CC,0.0204.115204.115370-C0023A-2F-CC,8.5204.200204.2000-8.5 cm Drill Breccia made of clasts of mud with some sand and silt. Clasts are loose and not compacted together or supported by a matrix. Same lithologies as 2F-12016-10-14T13:04:00
370-C0023A-3F-1,0.0205.000205.000370-C0023A-3F-CC,37.5207.000208.760Mud and muddy silt. Some mud is similar to cores 1F and 2F; silt-sized clasts of volcanic glass and many grains are near-euhedral igneous crystals (biotite and plagioclase).Other mudstones contain more pelagic grains, pyrite and organic matter than cores 1F and 2F. Units of sand in core 3F are poorly sorted with gravel-bases.Gravel-clasts include scoria, pumice and lava with mineralised vesicles. A soft sediment pyrite-vein (tigmatic morphology and evidence of toothpasting) cuts lamination. X-CT images available.2016-10-20T06:50:40
370-C0023A-3F-1,0.0205.000205.000370-C0023A-3F-1,140.0205.745206.4000-19 cm Fluidised mud (silty clay) with fine grains of volcanic glass, pyrite, diatom, radiolaria, sponge spicule. Minor fossil wood fragments and glaucontie.19-140 cm Mud varaiably dsturbed by drilling and core handlling but with essentially the same sedimentary components from 0-19 cm. 31-70 cm Mud with delamintion along bedding and expansion (compare X-CT and Split image).Other intervals evdience brecciation, creation of voids and fluidisation. No strong match between X-CT and split image photo in many regions (e.g. 31-70 cm).Fragments of metal still found in most fluisided and soupy intervals.2016-10-14T13:10:58
370-C0023A-3F-2,0.0205.745206.400370-C0023A-3F-2,53.5206.290206.9350-8 cm Black mudstone with few red fine sand grains (hematite or oxidized pyrite). Similar to 3F-1.8-39 cm Very fine sand, poorly sorted with both quartz and gravel.Main components are subdnagular quartz, with basaltic and intermeadiate igenous lithic and mineral fragments; muscovite, biotite and borwn amphiboles.Fossil wood, mud lithoclasts and scoria are also present. Gravel-sized angular clasts in base.39-54 cm Muddy siltstone, with angular clasts of quartz, biotite and hematite coated igenous clasts.2016-10-14T10:15:24
370-C0023A-3F-3,0.0206.290206.935370-C0023A-3F-3,111.0206.620208.450Logged using X-CT and sample residues.0-11 cm Sand, similar to 3F-2. Higher X-CT density at base inidicates a cemented zone or pebbly base.Change in X-CT density interpreted as fining upwards.11-110 cm Mud;Silty clay with pyrite, glauconite, volcanic glass, calcite. Rich in organic matter and pelagic and bioclastic grains. More sedimentary structres are preserved than in 3F-1.Based on observations made in deeeper cores the mottled appearence in X-CT interppreted as bioturbation.Pyritic mineral vein with a tigmatic shape.X-CT images available of vein.105-111 cm Muddy Silt with very fine sand. Minor amount of carbonate, but otherwise as for 11-110 cm.2016-10-14T13:14:59
370-C0023A-3F-4,0.0206.620208.450370-C0023A-3F-4,34.0206.801208.385Muddy silt, same as base of 3F-3. Infered from X-CT.2016-10-14T13:13:07
370-C0023A-3F-CC,0.0206.801208.385370-C0023A-3F-CC,37.5207.000208.7600-37.5 cm Muddy silt with many intermeadiate igenous grains including biotite. Minor pyrite, claystone fragments, volcanic glass, organic matter, pelagic grains. Spherical voids at base.2016-10-14T13:05:29
370-C0023A-4F-1,0.0253.000253.000370-C0023A-4F-CC,40.5255.000255.615Mud contains clay, biotite and muscovite, but very few volcaniclasts compared to cores 1F to 3F. Silt sized quartz is subrounded to angular. A high proportion of siliceous bioclasts and amorphous grains are present.Sand comprises coarse to fine clasts of volcanic or igneous rocks (e.g. scoria and pumice is infrequent).The fine sand is both texturally and mineralogically very immature and contains both plagioclase and biotite, in addition to both siliceous and calcitic bioclasts. Vitric volcanic glass uncommon.Sand has no observable structure and is assumed to have been fluidised during drilling.2016-10-20T07:23:20
370-C0023A-4F-1,0.0253.000253.000370-C0023A-4F-1,130.5253.998254.3050-17 cm Clasts of indurated mud in a soupy matrix of mud and sand.17-99.5 cm Distinctly Hemipelagic mud.Description based on the COMGAS sample residue. 80-87 cm.Components include clay, biotite and muscovite, but very few volcaniclats compared to previous intervals. Some vitric fragments. Silt sized quartz is subrounded to angular. A high proprtion of bioclasts amd amorhpus grains.99.5 to 120 cm fine grained sand; subrounded quartz with a high illite and biotite content.120-130 cm As 99.5 to 120 but with a soupy texture.2016-10-14T13:16:26
370-C0023A-4F-2,0.0253.998254.305370-C0023A-4F-2,90.5254.690255.2100-90 cm Structureless sand. Assumed to be flow in. Contains a range of clast sizes and types. Low vitric glass content but clasts include angular and rounded quartz, orthoclase and plagiocalse and both biotite and muscovite mica.Sponge sphicules are also present.Strong smell of sulphur and a high mud content, but less mud than core catcher.X-CT image shows a fluidised sand that settled under gravity, e.g. archive half full, working half contained a lesser volume of sand and water.2016-10-14T11:51:28
370-C0023A-4F-CC,0.0254.690255.210370-C0023A-4F-CC,40.5255.000255.6150-40 cm Structureless sand (flow in) as 4F-2.Medium to fine grained sand with a high mud content.Smear Slide available.Mud-fragment visible in X-CT not visible in either archive or working half.2016-10-14T13:06:03
370-C0023A-5F-1,0.0255.000255.000370-C0023A-5F-CC,25.5257.000258.525Hemipelagic mud in this interval is similar to 4F in containing both silt and pelagic grains, but patches are notably calcareous, many are cemented and sufficiently indurated to be referred to as mudstone.Sand in this interval is similar to that found in 4F-CC; coarse clasts of volcanic or igneous rocks are not present (e.g. scoria and pumice is infrequent). It is not consolidated. Vitrified volcanic glass is present but not a major constituent.The sand is both texturally and mineralogically very immature and contains both plagioclase and biotite, in addition to both siliceous and calcitic-bioclasts.2016-10-20T07:25:15
370-C0023A-5F-1,0.0255.000255.000370-C0023A-5F-1,112.5255.638256.1250-75 cm: Light grey mud with black flecks of wood. Highly brecciated due to drilling, otherwise similar to 4F-1; minor silt component, pelagic grains and limited volcaniclasts. 75-112.5 cm: Calcareous mud, some limited cemenetation and nodular pyrite.Higly brecciated due to drilling. Aside from calcareous matrix is otherwise similar to 0-75 cm and 4F-1.2016-10-14T13:31:12
370-C0023A-5F-2,0.0255.638256.125370-C0023A-5F-2,152.0256.501257.6450-50 cm Calcareous Mud same as calcareous mud in core 5F-1.50-150 cm fine to medium sand similar in composition to 4F-CC. Note soupy texture visible in X-CT.2016-10-14T13:31:41
370-C0023A-5F-3,0.0256.501257.645370-C0023A-5F-3,62.5256.855258.2700-20 - fine grained sand with a high mud content and wide range of clats types and shapes. See fine grained sand logged in core 4F-CC.20-62.5 cm: Calcareous mud with a carbonate concretion.Based on lower sections mottling in X-CT images may represent bioturbation.2016-10-14T13:32:12
370-C0023A-5F-CC,0.0256.855258.270370-C0023A-5F-CC,25.5257.000258.5250-25.5 cmFine to medium grained sand with same wide range of clast-types and shapes found in 4F-CC.2016-10-14T13:06:36
370-C0023A-6F-1,0.0303.000303.000370-C0023A-6F-CC,8.5304.520304.520Drill breccia comprising clasts of calcareous mudstone with a low silt content. Silt content consists of biotite, muscovite, feldspar, quartz, mafic grains, organic matter, vitric volcanic glass, diatoms, sponge spicules, pyrite and some carbonate.Mud in this core is lithified and cemented - often breaking and brecciating into angular fragments.2016-10-20T07:12:07
370-C0023A-6F-1,0.0303.000303.000370-C0023A-6F-1,10.5303.105303.105Silty mudstone; silt fraction includes quartz, biotite, feldspar and mafic grains. Minor pelagic grains and sponge spicules. Indurated and lithified.2016-10-14T14:03:30
370-C0023A-6F-2,0.0303.105303.105370-C0023A-6F-2,133.0304.435304.4350-47.5 to 100 cm Clasts of Mudstone within a loose drill breccia. Mudstone clasts have a high silt content that includes a higher proption of igneous clasts than core 5R, including biotite, muscovite, feldspar, quartz, and mafic grains.Organic matter, vitric glass, diatoms, sponge spicules, pyrite and some microcrystaline carbonate. 1-2% nanofossilsSome clasts are lithified and indurated. Some have broken to produce angular edges.Other clasts are cemented and have a calcitic matrix.Same as clasts of mudstone in section 6F-1.100-133 cm Mud, inferred from XCT image and 6F-CC. Disturbed by drilling.2016-10-14T14:13:26
370-C0023A-6F-CC,0.0304.435304.435370-C0023A-6F-CC,8.5304.520304.520Silty mud; silt content consists of quartz, biotite, feldspar, mafic grains. Unlike mudstone clasts, not lithified. Same as 6F-1.2016-10-14T14:15:26
370-C0023A-7X-1,0.0305.000305.000370-C0023A-7X-CC,35.0311.615311.615Hemipelagic mudstones, muddy-turbidites and turbidite-deposited muddy-sand.Mudstones are less cemented than core 6F and sand is only partially indurated likely reflecting its mud-content.Mudstones have both a high-silt content and sand/silt laminae that often form low angle asymmetrical ripples or planar lamination. The tops of many debris flows amalgamate into other muddy debris flows, several are bioturbated.Better examples of muddy turbidites and debris flows are seen in 16R.Healed deformation bands present, and can be seen in X-CT image.Injection of drilling-mud along sand-bearing laminae and biscuiting (rotation of core) have disrupted intervals fracturing the core parallel to bedding planes.2016-10-20T08:09:52
370-C0023A-7X-1,0.0305.000305.000370-C0023A-7X-1,68.0305.680305.6800-32 cm Mudstone with high silt content. Brecciated by and disturbed by drilling. Abundant carbonate and pyrite nodules but not calcitic outside of nodules. Silt grains include intermeadiate igneous minerals (biotite and plagioclase).Minor Bioturbation.32-46 cm Muddy siltstone, with visible pyrite nodules (max 2 mm), wood and small lithic fragments (max 5 mm).46-68 cm Mudstone same as 0-32 cm.2016-10-14T14:59:10
370-C0023A-7X-2,0.0305.680305.680370-C0023A-7X-2,127.5306.955306.9550-30 cm Mudstone similar to 7X-1.30-36 cm Siltstone with high mud content. Contains vitric ash and pyrite. Dark layers contain phytoclasts of mud (length ~ 400 um). Minor authigenic calcite.36-127.5 cm Mudstone similar to 7X-1.2016-10-14T15:52:09
370-C0023A-7X-3,0.0306.955306.955370-C0023A-7X-3,140.0308.355308.3550-67.5 Mudstone with a high silt and fine sand content; intermeadiate minerals (biotite and plagioclase). Minor authigenic pryite. Many silty and sand laminae - often rippled indicate deposition from currents. 59 to 60.5 cm and 67.5-83Poorly sorted sand rich in igneous and pelagic grains as well as sand to gravel sized pumice and sub-angular quartz.Normal grading at base and inverse grading at top back to gravel.83-140 Mudstone as 0-67.5 cm.2016-10-14T16:17:29
370-C0023A-7X-4,0.0308.355308.355370-C0023A-7X-4,141.5309.770309.7700-55.5 Mudstone with a high silt content and sveral fine sand laminae that often form low angle asymetrical ripples or are planar laminted.Simailar to 7X-3.55.5-61 cm Poorly sorted muddy sandstone, lithologically similar to 7X-3, but with less interanl structure. 61-141.5 cmMudstone with a high silt content and sveral fine sand laminae that often form low angle asymetrical ripples or are planar laminted.Simailar to 7X-3 and 0-55.5 cm.2016-10-14T16:40:53
370-C0023A-7X-5,0.0309.770309.770370-C0023A-7X-5,149.5311.265311.265Mudstone with a high silt content and sveral fine sand laminae that often form low angle asymetrical ripples or are planar laminted.Relative to 7X-3 and 7X-4 sand is less abundant.Drilling mud has inilftrated along multiple sand- and silt-bearing laminations beneath 80 cm fracturing core.77-144 cm Deformation bands are observed in X-CT images.2016-10-14T16:51:46
370-C0023A-7X-CC,0.0311.265311.265370-C0023A-7X-CC,35.0311.615311.6150-8 cm Mudstone heavily disturbed by drilling (more evidence of rotation and biscuiting), high silt-content, rich in pyrite and igneous lithoclasts. More lithified than in shallower cores (1F-5F).2016-10-14T16:53:33
370-C0023A-8F-1,0.0314.500314.500370-C0023A-8F-CC,33.0315.300315.300Drill breccia comprising clasts of mudstone in a gravel matrix. Most of the mudstone clasts are hemipelagic with a high silt content and pelagic grains (Similar to 7X-3).Other mudstone clasts are calcite cemented and rounded with less silt (see 6R-1).Healed deformation bands observed at base of core (8F-CC).2016-10-20T07:28:32
370-C0023A-8F-1,0.0314.500314.500370-C0023A-8F-1,47.0314.970314.9700- 30 cm: Drill breccia comprising clasts of mudstone in a gravel matrix.Some mudstone is hemipelagic with a high silt content and pelagic grains (Simailar to 7X-3). Other mudstone clasts are calcite cemented and rounded with less silt (see 6R-1).2016-10-14T17:17:37
370-C0023A-8F-CC,0.0314.970314.970370-C0023A-8F-CC,33.0315.300315.300Drill breccia comprising clasts of mudstone in a gravel matrix.Some mudstone clasts are silty and simailar to 7X-3 (large clast at base). Other mudstone clasts are calcite-cemented and rounded. (see 6F).24-31 cm deformation band.2016-10-14T17:22:12
370-C0023A-9F-1,0.0316.500316.500370-C0023A-9F-CC,21.0318.500320.160Drill breccia containing clasts of hemipelagic mudstone and an unconsolidated sand.Mudstone clasts are predominantly hemipelagic mudstone with silt, silt sized vitric volcanic ash, sponge spicules and other pelagic grains.Clasts include angular biotite, feldspars and carbonate bioclasts. Sand is soupy throughout.Healed deformation bands observed 9F-1.2016-10-20T07:25:42
370-C0023A-9F-1,0.0316.500316.500370-C0023A-9F-1,82.5316.951317.3250-63.0 cm Drill breccia of Mudstone clasts with gravel matrix. Some mudstone clasts are carbonate-cemented.Smear slides available and import for determining hemiepelagic charachter; many bioclasts and pelagic grains.Silty laminations still visible in some mudrock clasts. Cemented and rounded mudrock clasts interpreted as concretions.63-82.5 cm. Not seen but described from whole round residue. Very Fine Sand. Cohesive.Poorly sorted. Angular clasts include quartz, calcite, biotite, plagioclase and possibly orthoclase. Pummice and Scorria are notable and there is a high mud content.19-22 cm deformation band.2016-10-14T18:03:36
370-C0023A-9F-2,0.0316.951317.325370-C0023A-9F-2,114.0317.574318.465Logged from XCT and using residues from whole round.0-114 cm Medium grained sand with a range of clasts inclduing biotite and feldpsars. Some fine sand-sized clasts of scorria and pummice.Slightly less mud content than the sandstone at the base of section 1. Grading interpreted by comparison to reside described for 9F-1.Some larger gravel clasts are also present2016-10-14T18:02:51
370-C0023A-9F-3,0.0317.574318.465370-C0023A-9F-3,148.5318.385319.950Logged from XCT and using residues from MBIOS 2 9F-3 129-132 cm, and IWT 9F-3 97 - 110 cm.Fine to medium sand. Same as in 9F-2 but with some slightly less fine grains.2016-10-14T18:04:23
370-C0023A-9F-CC,0.0318.385319.950370-C0023A-9F-CC,21.0318.500320.160Medium to coarse grained sand with gravel sized fragmentrs of pummice.very high mud content. Mineral components include biotite, feldspars and carbonate bioclasts. Same sand as 9F-2, and 9F-3 but with both a higher mud and gravel content.Black flakey phytoclasts of wood/coal.2016-10-14T18:05:42
370-C0023A-10F-1,0.0353.000353.000370-C0023A-10F-CC,23.5354.840354.840Drill Breccia. Clasts are pelagic mudstone with low silt content. The sub-silt sized grains are predominantly pelagic (bioclasts, notable nano-fossils, amorphous silica). Fine burrows visible in split core image and there is pyritisation of grazing trails Pyrite and sponge spicules common. Vitric volcanic glass uncommon. Several sand laminae present at lowest section of core (10F-CC) but have been disrupted by drilling.Some reverse faulting with slickenlines observed at base of core (10F-CC).2016-10-20T07:43:08
370-C0023A-10F-1,0.0353.000353.000370-C0023A-10F-1,71.5353.715353.715Drill Breccia comprising calsts of mudstone in a mtarix of gravel. Clasts are angular and not calcite-cemented. From smear slide description the mustone contains sub-silt sized grains that are are predominantly pelagic (bioclasts, notable nano-fossils).Fine burrows can be seen in section. Silt and volcanic glass is not abundant. Pyrite and sponge spicules are common.2016-10-14T18:38:42
370-C0023A-10F-2,0.0353.715353.715370-C0023A-10F-2,89.0354.605354.6051-50 Drill breccia of mudstone clasts in a mtarix of gravel. Clasts are angular and not calcite cemented.From smear slide description of the mudstone sub-silt sized grains can be seen to be predominantly pelagic (bioclasts, notable nano-fossils).Fine burrows vissible in section and there is pyritisation of grazining trails that follow laminae rather than cutting them. Silt is not abundant.50-89 Mudstone as above but bedded.Despite hevay disruption by drilling burrows and grazing trails can still be seen. Pyrite and sponge spicules common.2016-10-14T18:39:59
370-C0023A-10F-CC,0.0354.605354.605370-C0023A-10F-CC,23.5354.840354.840Hemipelagic mudstone with sand laminae. Drilling disruption is too great to determine bedforms or distances between laminae accurately. Sponge spicules and pyrite common, vitric ash is uncommon.5-20 cm several revese faults.Some of them are observed slickenline.2016-10-14T18:25:26
370-C0023A-11F-1,0.0355.000355.000370-C0023A-11F-CC,50.0356.210356.210Drill breccia similar to 10F. Clasts of hemipelagic mudstone and carbonate-cemented mudstone. Mudstone contains both detrital silt and pelagic mud grains. Instance of pyrite mineralisation tracking sand lamination.2016-10-20T07:46:09
370-C0023A-11F-1,0.0355.000355.000370-C0023A-11F-1,71.0355.710355.710Drill Breccia similar to 10F. Clasts of hemipelagic mudstone and carbonate-cemented mudstone. Mudstone contains both detrital silt and pelagic mud grains.1.5-3 cm A 0.8 cm wide Zoophycos burrow preserved within a concreation.<1 mm white dots are common. They are aggregates of sponge spicules2016-10-15T04:51:44
370-C0023A-11F-CC,0.0355.710355.710370-C0023A-11F-CC,50.0356.210356.210Drill Breccia similar to 10F. Clasts of hemipelagic mudstone and carbonate-cemented mudstone. Mudstone contains both detrital silt and pelagic mud grains.30.5 cm Pyrite mineralisation tracks a sandy lamination.2016-10-15T04:53:18
370-C0023A-12F-1,0.0357.000357.000370-C0023A-12F-CC,30.0358.725358.725Drill breccia similar to 10F and 11F. Clasts of hemipelagic mudstone and carbonate-cemented mudstone. Relative to 10F and 11F the sub-silt fraction contains more pelagic grains and fewer silt-sized clasts.Most of the siliceous content is amorphous and bioclastic (not visible in XPL).2016-10-20T07:47:42
370-C0023A-12F-1,0.0357.000357.000370-C0023A-12F-1,142.5358.425358.425Drill Breccia similar to 10F and 11F. Clasts of hemipelagic mudstone and carbonate-cemented mudstone. Relative to 10F and 11F the sub-silt fraction contains more pelagic grain and fewer silt-sized clasts.Most of the siliceous content is bioclastic (not visible in XPL).2016-10-15T04:58:38
370-C0023A-12F-CC,0.0358.425358.425370-C0023A-12F-CC,30.0358.725358.725Drill Breccia similar to 10F and 11F. Clasts of hemipelagic mudstone and carbonate-cemented mudstone. Relative to 10F and 11F the sub-silt fraction contains more pelagic grain and fewer silt-sized clasts.Most of the siliceous content is bioclastic (not visible in XPL). A few white rings found within mudclats in the CC (core-catcher photo) contain sponge spicules in high abundance.2016-10-15T05:00:45
370-C0023A-13F-1,0.0359.000359.000370-C0023A-13F-CC,30.5361.000361.505Drill breccia similar to 10F, 11F, 12F. Clasts of hemipelagic mudstone and carbonate-cemented mudstone. Some of the hemipelagic mud-clasts have fabrics indicative of bioturbation (primarily burrows) and patchy pyritisation along grazing trails.The silt content is low and most of the siliceous silt-content is bioclastic (amorphous silica phases not visible in XPL).The patchy pyritisation along grazing trails is similar to that seen in the fragmented clasts of mudrock seen in 14X-1.Sandy lithologies not observed.2016-10-20T07:55:47
370-C0023A-13F-1,0.0359.000359.000370-C0023A-13F-1,77.0359.615359.770Drill Breccia similar to 10F and 11F. Clasts of hemipelagic mudstone and carbonate-cemented mudstone. Relative to 10F and 11F the sub-silt fraction contains more pelagic grain and fewer silt-sized clasts.Most of the siliceous content is bioclastic (not visible in XPL).Some of the mud clasts evdience biotrubation and patchy pyritisation along grazing trails (e.g. good example seen in fragmented clasts of the mudrock from 14X-1).2016-10-15T05:02:36
370-C0023A-13F-2,0.0359.615359.770370-C0023A-13F-2,143.0360.757361.200Lithology description fromresidueDrill Breccia similar to 10F, 11F and 13F-1. Clasts of hemipelagic mudstone and carbonate-cemented mudstone. Relative to 10F and 11F the sub-silt fraction contains more pelagic grain and fewer silt-sized clasts.Pyritisation along grazing trails and sphiculite present in larger clasts as white patches of acciular needles.2016-10-15T05:24:21
370-C0023A-13F-CC,0.0360.757361.200370-C0023A-13F-CC,30.5361.000361.505Drill breccia of same mudstone lithology found in section 13F-1 (Similar to 10F, 11F, 12F).2016-10-15T05:25:58
370-C0023A-14X-1,0.0403.000403.000370-C0023A-14X-CC,40.0406.410406.410Black pelagic mudstone, similar to cores 11F, 12F, 13F. Low silt-content outside of silt laminae. Burrows are both horizontal and vertical and several are pyritised. Some silt-laminae evidence ripples and other flow structures.Bioturbation can be intense leading to a mottled appearance. Burrows are pyritised.Some reverse faulting with slickenlines (14X-1), healed deformation bands observed at base of core (14X-3).Bedding is horizontal. Possible repetition of units based on repetition of silt-lamina sets and pyritised-ichnofabrics.2016-10-20T09:40:48
370-C0023A-14X-1,0.0403.000403.000370-C0023A-14X-1,124.5404.245404.245Mudtsone, same as in cores 11F,12F, and 13F. Low silt content and high bioclast content. Bioturbation varies and creates intense mottled texture in places.Heavy pyritisation along bedding parallel grazing trails creates black bands (in 14F-CC it is along sandstone laminae). In XCT vertical burrows can be identified, and lamina grazing trails also notable.Microcrystaline carbonate and carbonate-fossil content varies but is present through out. levels. Silt lamina are locus for bedding parallel breciation during drilling at 32 to 35 cm and also 97 to 101 cm.Bioturbation varries and cerates notably mottled textures at 35 - 40 and 85 to 97 cm.These lamina-sets are repeated twice.25-28cm reverse fault with slickenline.90-93cm reverse fault with slickenline.2016-10-15T07:37:42
370-C0023A-14X-2,0.0404.245404.245370-C0023A-14X-2,135.0405.595405.595Logged from XCT and COMGAS sample residue. Same mudstone as 14F-1, with small interbeds of silt.2016-09-24T13:59:40
370-C0023A-14X-3,0.0405.595405.595370-C0023A-14X-3,41.5406.100406.100Mudstone, same as Section 14F-1 and cores 10,11,12. Bioturbation varries but creates mottled appearence 22.36 cm. Pyritisation is heavy along sand interval at 36 cm and creates black band.Possible burrow infill.33 to 34.5 cm reverse fault with slickenlines 34 to 36 cm healed deformation band. 33 to 36 cm healed deformation band38 cm horizontal bedding deduced from lamination.2016-09-24T14:54:43
370-C0023A-14X-CC,0.0406.100406.100370-C0023A-14X-CC,40.0406.410406.410Mudstone, same as Section 14F-1 and cores 10,11,12. Bioturbation varries but creates mottled appearence 24-26 cm. Pyritisation is heavy along sand interval at 6 cm and creates black band.This could be a burrow infill.6 cm horizontal bedding deduced from lamination14 cm horizintal bedding deduced from lamination18.5 cm horizintal bedding deduced from lamination25 - 26 cm Huge deformation band2016-09-24T15:02:57
370-C0023A-15F-1,0.0407.500407.500370-C0023A-15F-CC,50.5408.135408.135Drill breccia containing clasts of pelagic- and turbidite-mudstone, same as seen in core 14X. Mudstones have generally low silt content, except where silt is localised within laminae.A mudstone-clast with a tuffaceous-sand filling a burrow is seen in 15F-1. The burrow's sand-fill includes vitric volcanic glass and angular quartz.2016-10-20T08:18:43
370-C0023A-15F-1,0.0407.500407.500370-C0023A-15F-1,13.0407.630407.630Drill Breccia of pelagic and turbidite mudstone seen in X14.1.5-2.5 cm. Mudstone-clast with a tuffaceous sand filling a burrow. Burrow sand-fill includes vitric glass and angular quartz.2016-10-15T08:25:05
370-C0023A-15F-CC,0.0407.630407.630370-C0023A-15F-CC,50.5408.135408.135Drill Breccia of clasts of mudstone similar to 15F-1 and 14X. Mixture of carbonate cemented and low-carbonate clasts. 29-31.5 cm Carbonate concreation with a high X-CT density.43 cm A thin, 0.5 mm-long white band consists of dominantly calcareous nanofossils.2016-10-15T08:23:21
370-C0023A-16R-1,0.0410.500410.500370-C0023A-16R-CC,30.5418.500419.135Black and gray mudstones with thin silt and sand laminae that often have current-features such as asymmetrical low angle ripples and parallel lamination. Interpreted as debris flows and turbidites that either amalgamate or are bioturbated at top.Black mudstones often have pyritisation and a lesser silt content. Gray mudstones evidence bioturbation at top of beds and have a higher silt content that includes quartz, calcite and vitric volcanic glass.Reverse faulting with slickenlines observed 16R-1, some normal faulting with slickenlines observed in cores 16R-5-16R-7.2016-10-20T08:23:20
370-C0023A-16R-1,0.0410.500410.500370-C0023A-16R-1,127.5411.681411.775Mudstone with high silt content including flakes of muscovite, biotite, vitric Volcanic fragments, wood/coal. (Different from cores 14 and 15 - less hemipelagoc.)Bioturbation includes both networks of clay filled fine horizontal burrows (Chondrites) and vertical burrows tha cut through Laimnae. Burrows are not as heavily pyritised as core 14X.Bioturbation often overlies silt laminations and silt lamina-sets. These are often dislocated during drilling. On X-CT they maybe impregnated by drilling mud.30-34 cm reverse fault with slickenline.30-34 cm fault. sense is unknown.2016-09-29T04:43:51
370-C0023A-16R-2,0.0411.681411.775370-C0023A-16R-2,119.5412.788412.970Description based on X-CT, IW trimmingsSilt clasts include shell fragments and woody and organic clasts0-50 cm Mudstone - (similar to 14?-check with smear), but less pyrite. Loose clasts from interval have small fine burrows.But mostly laminated with fine silt and sandstone50 to 55.5 cm Medium grained sandstone with a cemented concretion little fizzing. Interpreted as siderite. Possible climbing current ripple in base (CT image saved).55-62 cm Mudstone with silt laminae 62-65 cm Sandstone. based on desnity.IWT sample 16R-2 50 to 70 cm contains high proportion of fine to medium sand and silt. 65-119.5 cm Mudstone - more pyrite and less laminated (more bioturnated).Described from COMgas sample 16R-2 70 -80 cm: Mudstone with high silt content including flakes of muscovite, biotite, vitri Volcanic fragments, wood/coal. (Different from cores 14 and 15).A clast has Asymetrical ripples along some silt laminae and chondrites burrows.2016-09-27T12:38:19
370-C0023A-16R-3,0.0412.788412.970370-C0023A-16R-3,143.0414.113414.400X-CT onlyAssumed Mudstone, based on 15R-2 and VCD showing some silt lamination and pyritisation in intervals2016-09-27T07:28:41
370-C0023A-16R-4,0.0414.113414.400370-C0023A-16R-4,125.5415.276415.655Dark Gray bioturbated mudstone with Silt lamiane.Bases often homogeneous mud and tops bioturbated2016-09-27T13:24:28
370-C0023A-16R-5,0.0415.276415.655370-C0023A-16R-5,78.0415.999416.43558-60 cm reverse fault .2016-09-29T04:45:05
370-C0023A-16R-6,0.0415.999416.435370-C0023A-16R-6,92.0416.851417.355Turbidite mud with silt laminae.Bioturbated in places. 62-65 cm normal fault2016-09-29T04:46:54
370-C0023A-16R-7,0.0416.851417.355370-C0023A-16R-7,147.5418.218418.830Mudstone with occasional silt and sand laminae and thin sandstone beds. Sandstone laminae are often displaced by drilling mud. Bioturbation varries and includes chondrities. 15-18 cm normal fault with slickenlie.45-49 cm normal fault with slickenline.2016-09-29T04:48:25
370-C0023A-16R-CC,0.0418.218418.830370-C0023A-16R-CC,30.5418.500419.135Mudstone with occasional silt and sand laminae and thin sandstone beds. Sandstone laminae are often displaced by drilling mud. Bioturbation varries and includes chondrities2016-09-27T16:44:28
370-C0023A-17R-1,0.0418.500418.500370-C0023A-17R-CC,101.5421.795421.795Drill breccia comprising clasts of mudstone and muddy-siltstone, with some undisturbed intervals. Both the mudstone and breccia-clasts are the same lithology as 16R; mudstones have silt-lamiane, some of which exhibit current structures.Bioturbation by burrows is common and likely marks the top of debris flows or turbidites. Silt content varies and is typically sub-angular quartz with minor plagioclase. Volcanic clasts are less common.Some clasts of mudstone are calcareous and cemented by calcite. Horizontal bedding inferred from lamination 17R-2.2016-10-20T09:40:34
370-C0023A-17R-1,0.0418.500418.500370-C0023A-17R-1,103.0419.530419.530Mudrock, bioturbatedDark-coloured burrows appear in patches parallel to each other at high angle to the bedding from 0 to 44 cm. Also parallel to them are some fine pyrite veins.4.5 cm sponge spicules form a 0.6 mm long white ringMissing intervel inferred from XCT image2016-09-27T22:57:13
370-C0023A-17R-2,0.0419.530419.530370-C0023A-17R-2,125.0420.780420.780Missing interval inferred from XCT image and adjacent cores 0-64 Mudrock, bioturbatedScattered burrows throughoutHorizontal layers of moderate bioturbation at 29, 30, 32, 36 cm. An isolate burrow at 35 cm (0.8 cm long, 0.4 cm high)42 cm 1 pyrite nodule 1mm x 6mm.31-32 is a silty layer with heavy bioturbation64-67 Silt67-80 Mudrock, bioturbated71-72 and 74-76 cm are burrows filled with calcareous polycrystalline aggregates consisting of dominantly nannofossils100-103 Silt. 103-112 Mudrock. 109.5 cm is a 1.5 cm long horizontal burrow filled with calcareous polycrystalline aggregates consisting of dominantly nannofossils. 31-32 cm horizontal bedding deduced from lamination.41 cm horizontal bedding deduced from lamination.2016-09-29T04:53:13
370-C0023A-17R-CC,0.0420.780420.780370-C0023A-17R-CC,101.5421.795421.7952016-09-28T04:59:20
370-C0023A-18R-1,0.0428.000428.000370-C0023A-18R-CC,30.5436.485436.485Hemipelagic mudstones, turbidite-deposited mudstones (similar to other muddy-turbidites found in cores 10F-17R) and volcanic sandstone with current structures in its base grades that grades to a volcaniclastic-mudstone.Grading is spatially linked to bioturbation and burrows. Volcanic sandstone contains a high proportion of volcanic ash, angular and sub-angular quartz, as well as a small proportion of detrital igneous crystals (silt-sized albite and amphibole).Clay and opaque minerals are present along cross-lamination. A tigmatic-vein with pyrite-mineralisation is associated with a muddy turbidite and likely represents dewatering.Normal faulting with slicken lines observed in 18R-3,65-69 cm and a healed deformation band observed 18R-3,106-114 cm.2016-10-22T08:31:35
370-C0023A-18R-1,0.0428.000428.000370-C0023A-18R-1,121.0429.210429.210Mudstone as described in 18R-2 - 7. Silt laminae infered fromX-CT for trubidite counting statistics2016-10-15T11:33:43
370-C0023A-18R-2,0.0429.210429.210370-C0023A-18R-2,127.0430.480430.480Bioturbated mudstone with silt laminations.intervals with silt laminations pass upwards to burrows and bioturbation.87 cm Burrow infilled with vitric ash, fine sand and silt.Grainsizes of clasts are larger in burrows than in mudstones.Pyrite. Rare, and sub-angular quartz and feldspar present.2016-10-15T11:38:57
370-C0023A-18R-3,0.0430.480430.480370-C0023A-18R-3,122.0431.700431.700Black mudstone same as 17 but less silty and less bioturbated,Little burrowing also.Carbonate cemented horizion at 72 cmSoft sediment vein - pyrite from 86 to 100 cm65-69 cm normal fault.106-114 cm deformation band.2016-09-29T04:58:03
370-C0023A-18R-4,0.0431.700431.700370-C0023A-18R-4,107.5432.775432.775Sequence of silty mudstones with silty bases and often biotubated tops. Bed boundaries not always clear.93 First encounter of tuff layer. Dominant vitric glass, few calcareous nannofossils.bedding deduced by ash layer.Micrograph availableTuff layer 94 to 9555cm horizontal bedding deduced by lamination.95.5 cm horizontal2016-09-29T05:00:10
370-C0023A-18R-5,0.0432.775432.775370-C0023A-18R-5,141.5434.190434.190Silty mustone with silt laminae often topped by bioturbated intervals.Chondtites common, as are other dish shapped burows29 Sponge spicule with nannofossilsPryite nodule 20 cm Inverse graded mudstone with tigmatic pyrite vein at 100 cmclose up image taken2016-09-28T07:52:25
370-C0023A-18R-6,0.0434.190434.190370-C0023A-18R-6,128.0435.470435.470120 cm horizontal bedding deduced by ash layer.2016-09-29T05:01:20
370-C0023A-18R-7,0.0435.470435.470370-C0023A-18R-7,71.0436.180436.180Mudstone pelagic from 0-42 cmSiltier and possibly a turbidite from 45 to 72 cmSame lithology as section 3-617 cm horizontal bedding deduced by pyrite layer.2016-09-29T05:02:28
370-C0023A-18R-CC,0.0436.180436.180370-C0023A-18R-CC,30.5436.485436.485Turbidite deposited mudstones with chondrities and other burrows.Clast of ash-bearing siltstone with pyrite nodules and volcanic ash-filled burrows at 24 to 25 cm.Thin section taken.2016-10-15T11:46:36
370-C0023A-19R-1,0.0437.500437.500370-C0023A-19R-CC,31.0446.495446.495Hemipelagic mudstone and turbidite-deposited mudstones. Silty and sandy laminationsas well as bioturbation is common throughout. Many silt laminations evidence current-bedforms (e.g. ripples and low angle planar lamination).In some places silt-laminae are cut by bioturbation.Some normal faulting with slicken lines observed in the top and base of core (e.g. 19R-1, 89-102cm and 19R-6,107cm to &19R-7-98cm.2016-10-22T08:41:19
370-C0023A-19R-1,0.0437.500437.500370-C0023A-19R-1,115.0438.650438.650Logged from X-CTMudrock - some silt laminations, pyritisation of burrows.Varied bioturbation.89-91.5 cm normal fault with slickenline.101-102 cm normal fault with slickenline.2016-09-29T05:04:54
370-C0023A-19R-2,0.0438.650438.650370-C0023A-19R-2,130.0439.950439.950Silt Lamina bearing Mudstones - similar to 18R.Chondrites fossil present. Turbidites demarkated by silt bases and bioturbated tops.2016-09-28T14:52:24
370-C0023A-19R-3,0.0439.950439.950370-C0023A-19R-3,141.0441.360441.360Mudstone - same as 18R.2016-09-28T16:25:47
370-C0023A-19R-4,0.0441.360441.360370-C0023A-19R-4,104.0442.400442.400Hemipelagic mudstone with silty and sandy laminations, bioturbation common through out but often cut by silstone lamiane60 cm horizontal bedding deduced by lamination.2016-09-29T16:12:54
370-C0023A-19R-5,0.0442.400442.400370-C0023A-19R-5,118.0443.580443.580Hemipelagic mud. Less silty than 18R-42016-09-29T16:21:54
370-C0023A-19R-6,0.0443.580443.580370-C0023A-19R-6,124.5444.825444.825Hemipelagic mud with silt lamiantions and bioturbation107-118 cm deformation band.121-124 cm normal faulting with slickenline.2016-10-04T09:47:00
370-C0023A-19R-7,0.0444.825444.825370-C0023A-19R-7,136.0446.185446.185Hemipelagic mudstone with silt laminations and bioturbation17-18 cm normal fault with slickenline.86.5-91 cm normal fault with slickenline.93-98 cm normal fault with slickenline.2016-09-29T16:43:33
370-C0023A-19R-CC,0.0446.185446.185370-C0023A-19R-CC,31.0446.495446.495Hemipelagic mudstones and carbonate nodules. Highly brecciated by drilling2016-09-29T16:47:18
370-C0023A-20R-1,0.0447.000447.000370-C0023A-20R-CC,25.0453.335453.335Bioturbated mudstones, calcareous mudstones and a volcanic sandstone and volcaniclastic mudstone. Bioturbation is notably heavy to the extent that silt-laminae are not continuous.The tuffaceous mudstone in 20R-1 is bioturbated to the extent that burrows are the only remaining sedimentary structure. The main components of the volcanic sandstone is vitric-volcanic glass,quartz and plagioclase with a range of grainsizes from silt to medium sand. Normal faulting with slicken lines observed in 20R-5, 94-97cm.2016-10-22T08:56:11
370-C0023A-20R-1,0.0447.000447.000370-C0023A-20R-1,139.0448.390448.390Missing interval inferred from XCT image and adjacent intervalsMudrock in which bioturbation is common. Burrows are filled with few carbonate and ash which is dominantly vitric glass.2016-09-28T20:02:11
370-C0023A-20R-2,0.0448.390448.390370-C0023A-20R-2,119.5449.585449.585Lithology inferred from XCT image, adjacent intervals and COMGAS samples.Mudrock. 0-20 cm COMGAS sample consists of pelagic mydstone. White clast, poor bedding.Siderite concretion.2016-09-28T19:30:28
370-C0023A-20R-3,0.0449.585449.585370-C0023A-20R-3,125.5450.840450.840Missing intervals inferred from XCT image and adjacent intervals.Mudrock with bioturbationClear zoophycos @ 42, 44, 47, 48 and 69 cmDrilling mud at 4, 22.5, 89.5 cmBurrows in this section is filled with ash and carboante.Higher carbonate content than section 1.2016-09-28T20:05:46
370-C0023A-20R-4,0.0450.840450.840370-C0023A-20R-4,125.0452.900452.900Inferred to be mudrock from XCT image and adjacent sections. There is likely a transition from mudrock to calcareous mudrock2016-09-28T18:58:23
370-C0023A-20R-5,0.0452.900452.900370-C0023A-20R-5,99.5453.850453.850Calcareous mudrock15 cm A thin horizontal carbonate band91 cm Quartz aggretate (2 mm)Aggregates (1-3 mm) of sponge spicules at 44, 60, 77 and 82 cm94-97 cm normal fault with slickenline.2016-09-29T05:22:13
370-C0023A-20R-CC,0.0453.850453.850370-C0023A-20R-CC,25.0453.335453.335The core catch has a layer of calcareous mud on top, followed by a layer of darker, less calcareous mud. At 5 is a bioturbated horizon separating the mud layer and the tuff below. The bioturbated horizon consists of ash and carbonate.The tuff layer is bioturbated on top and has a sharp base. Normal grading.Below the tuff layer is brecciated mudrock.6cm horizontal bedding deduced by ash.2016-09-29T05:23:06
370-C0023A-21R-1,0.0456.000456.000370-C0023A-21R-CC,21.0462.290462.290Bioturbated mudstones and calcareous mudstones. Silt content includes quartz and volcanic glass and igneous grains (biotite and plagioclase) as well as bioclasts (spicules).Bioturbation is common, silt laminae are discontinuous and burrows are filledwith ash and carbonate. Volcanic sandstones with and without current-structures (cross lamination) are present. Main volcanic clasts are pale-white quartz, vitric-volcanic glass and darker glass (crushed pumice and amphibole).White-laminae often grade in and out of dark laminae. Heavily bioturbated volcaniclastic mudstones are also present. One overlies a volcaniclastic sandstone, the other does not implying the complete reworking of an ash layer by bioturbation.Normal faulting with slickenlines observed in 21R-2, 66-69cm.Pyritisation along base of volcanic sandstone at 21R-2 and 21R-4.2016-10-22T10:52:23
370-C0023A-21R-1,0.0456.000456.000370-C0023A-21R-1,121.0457.210457.210Intervals of mudrock and calcareous mudrcokMissing interval is inferred from adjacent sections. The exact location of the transition between mudrock and calcareous mudrock in the missing interval is not certain.Moderate bioturbation throughout the section. Burrows are filled with carbonate and ash.Numerous mm-size pyrite nodules2016-09-28T21:52:16
370-C0023A-21R-2,0.0457.210457.210370-C0023A-21R-2,131.0458.520458.520Missing intervals inferred from adjacent intervals and XCT image.Calcareous mud, bioturbatedAn interval of bioturbated tuff.2 dark bands, one just above the tuff interval, and one at the bottom of the section. They consist of domantly pyrite and vitric glass. Similar mineralisation style detected in later core numbers (see 61 and 63)95-96 cm horizontal bedding.96-99 cm normal fault.130 cm horizontal bedding deduced by lamination.2016-10-22T10:26:53
370-C0023A-21R-3,0.0458.520458.520370-C0023A-21R-3,115.5459.675459.675Inferred as calcareous mudrock from adjacent intervals. Rich in pyrite.2016-09-28T22:32:28
370-C0023A-21R-4,0.0459.675459.675370-C0023A-21R-4,107.5460.750460.75036 cm horizontal bedding deduced by lamination.59 cm horizontal bedding.2016-09-30T10:31:06
370-C0023A-21R-5,0.0460.750460.750370-C0023A-21R-5,133.0462.800462.800Missing intervals inferred from adjacent intervals and XCT image.Calcareous mudrock. Numerous pyrite nodules. The whole section is moderately bioturbated. Burrows filled with ash and carbonate.49.5-52 cm is a heavily bioturbated area. It has high contents of ash and carbonate than the surrounding mudrock.2016-09-29T00:13:27
370-C0023A-21R-CC,0.0462.800462.800370-C0023A-21R-CC,21.0462.290462.290Calcareous mudrock2016-09-28T23:43:50
370-C0023A-22R-1,0.0465.500465.500370-C0023A-22R-CC,25.0473.765473.765Bioturbated mudstones and calcareous mudstones with thin beds of volcaniclastic sandstones and mudstones. (Similar to 21R). Bioturbation is common and many silt laminae are discontinuous because they are cut by burrows.Burrows are filled with ash and carbonate bioclasts within a muddy matrix. Many volcanic sandstones have current structures and pass upwards into bioturbated volcaniclastic mudstones.Both white and black volcaniclasts observed in units that appear both light and dark in VCD. Some healed faulting observed; it has normal displacement and cuts bedding. Normal faulting with slickenlines observed in 22R-2, 56-58cm.Shear fractures present throughout core.2016-10-22T14:19:25
370-C0023A-22R-1,0.0465.500465.500370-C0023A-22R-1,118.0466.680466.680Bioturbated mudrock27-30 cm healed fault cutting lamination.28 cm horizontal bedding deduced by lamination.48-56 cm healed fault.68-75 cm healed fault.2016-09-30T10:52:05
370-C0023A-22R-2,0.0466.680466.680370-C0023A-22R-2,117.5467.855467.8551-95 Mudrock similar to previous sections. 1-56 appear paler in colour as they are burnt during core recovery.64.5-71 Heavily bioturbated. Burrows are filled with ash.95-117 Calcareous mudrock with vitric glass56-58 cm normal fault.2016-09-30T10:54:11
370-C0023A-22R-3,0.0467.855467.855370-C0023A-22R-3,41.0468.265468.265Bioturbated, calcareous mudrock2016-09-29T22:00:10
370-C0023A-22R-4,0.0468.265468.265370-C0023A-22R-4,136.0469.625469.6251-51 Bioturbated calcareous mudrock with thin silt layers51-66.7 Tuff layer, grain sizes in the range of very fine sand. Domanant carbaonte and reacts fiercely with HCl. Most pale at the bottom and fades upwards into mud.84-86 A large horizontal burrow, dark in colour, probably pyritized. 66.5 cm horizontal bedding deduced by tuff layer.105-113 cm healed fault.120-124 cm healed fault.121-125 cm healed fault.2016-11-05T18:50:16
370-C0023A-22R-5,0.0469.625469.625370-C0023A-22R-5,100.5470.630470.630Bioturbated mudrock and calcareous mudrock.17-25 cm healed fault.2016-09-30T11:02:36
370-C0023A-22R-6,0.0470.630470.630370-C0023A-22R-6,48.5471.115471.115Bioturbated calcareous mudrock14-22 cm healed fault.2016-09-30T11:03:39
370-C0023A-22R-7,0.0471.115471.115370-C0023A-22R-7,93.0472.450472.450Bioturbated calcareous mudrock, with intervals of tuff and non-calcareous mudrock.45-47 Heavily bioturbated area with more ash than mud.59-62 Tuff layer with ripples on top. Grain size is in the range of fine sand.Calcareous. Below it is a band of dark silt, and a band of tuff with flame structures76-77 Course tuff interval33-49 cm healed fault.2016-10-02T06:25:08
370-C0023A-22R-8,0.0472.450472.450370-C0023A-22R-8,147.0473.515473.515Missing intervals inferred from adjacent intervals and XCT image.Calcareous mudrock.4.5-8 Coarse sand. Black sand surrounding white sand which consists of quartz crystals with vitric glass.Below it is a tuff layer which bottom ends abruptly at an angle at a fault.33-50 cm healed fault.2016-09-30T11:04:22
370-C0023A-22R-CC,0.0473.515473.515370-C0023A-22R-CC,25.0473.765473.765Mudrock2016-09-30T01:09:32
370-C0023A-23R-1,0.0475.000475.000370-C0023A-23R-CC,35.5481.660481.660Hemipelagic mudstones, mudstones deposited by turbidites, heavily bioturbated and calcareous over several meters. (Similar to 21R and 22R). Several volcaniclastic beds present. Most beds have flow structures and gradationally pass upwards into bioturbated volcaniclastic mudstones. Both pale and dark volcanic ash observed.Normal faulting with slicken lines observed in 23R-3, 23-27cm.2016-10-22T17:46:26
370-C0023A-23R-1,0.0475.000475.000370-C0023A-23R-1,144.0476.440476.440Missing interval inferred from 6-20 cm and XCT image.1-6 Mudrock6-20 Calcareous mudrock, moderately bioturbated. Burrows filled with carbonate and ash8-10 cm Pyrite nodule2016-09-29T03:01:25
370-C0023A-23R-2,0.0476.440476.440370-C0023A-23R-2,148.5477.925477.925Based on extrapolation from sections 2 and 3, and looking at X-CT density constrats the top and base of unit are hemipelagic mudstones.67-97 cm is pyritsied, less calcareous mudstone2016-09-29T09:10:09
370-C0023A-23R-3,0.0477.925477.925370-C0023A-23R-3,110.0479.250479.250Hempelagoc mudstone with volacanic sandstones/mudstones at 8-12 and 63-71 cmRelatively little pyritisation and high bioturbation.Both volcanic sediments have bioturbated tops.volcanic mudstone at 63-71 grades from sandstone to mudstone (greater than half of unit is mudstone.23-27 cm normal fault.68.5 cm horizontal bedding deduced by ash layer.2016-09-30T10:35:09
370-C0023A-23R-4,0.0479.250479.250370-C0023A-23R-4,116.0480.185480.185Hemipelagic mudstone.Heavily bioturbated, little pyrite.Zoophycos burrow 10 to 25 cmVolanic ash layer loading into volcaniclastic mudstone at 26.5 to 32 cm.Volcanic ash layer at 53 to 55 cm overlain by a volcaniclatsic mudstone with small 3 mm diameter chondrities burrows. Dewatering and injection occurs at both base of Volacnic ash layer and top of mudstone.Contact for both unts not observed dur to drilling brecciation.52-54 cm horizontal bedding deduced by ash layer.2016-09-30T10:36:10
370-C0023A-23R-5,0.0480.185480.185370-C0023A-23R-5,112.0481.305481.305Hemipelagoc mudstone and calcaerous hemipelagico mudstone. very biotrubated. Limited pyritisation2016-09-29T08:52:14
370-C0023A-23R-CC,0.0481.305481.305370-C0023A-23R-CC,35.5481.660481.660Hemipelagic mudstone with heavy bioturbation and some pyritisation.Ash layer in bases comprises volcanic sand and volcaniclastic mudstone.2016-09-29T09:05:04
370-C0023A-24R-1,0.0484.500484.500370-C0023A-24R-CC,33.0494.000494.775Hemipelagic mudstones, mudstones deposited by turbidites, and calcareous mudstones (Similar to 23R). Several volcaniclastic beds present. Tuff and ash beds evidence bedforms (ripples, low-angle laminations and cross-lamination) and gradationally passupwards into bioturbated volcaniclastic-mudstones. Both pale and dark volcanic ash observed.Fluidised sand bed at 24R-5, 73 cm contains volcanic clasts and rounded quartz.2016-10-23T05:21:28
370-C0023A-24R-1,0.0484.500484.500370-C0023A-24R-1,90.5485.337485.405Calcareous mudstone with pyrote nodules. Lots of bioturbation and to large burrows filled with silt at 62.5 cm2016-09-29T12:04:56
370-C0023A-24R-2,0.0485.337485.405370-C0023A-24R-2,109.5486.349486.500Calcareous mudstone with slight bioturbation and horizontal burrows.2016-09-29T11:53:54
370-C0023A-24R-3,0.0486.349486.500370-C0023A-24R-3,131.5487.565487.815Clacaeous mudstone, similar to 24R-2.2016-09-29T12:07:51
370-C0023A-24R-4,0.0487.565487.815370-C0023A-24R-4,107.5488.559488.890Hemipelagic calcareous mudstone.Contains silt laminae at 61 cm and thick silt layer 17 to 11 cm.Both silt lamiane are bioturbated at top with sharp bases.Small trubidite unit 50-61 cm is not calcareousHeavily pyritised.60 cm horizontal bedding deduced by lamination.2016-09-30T10:38:25
370-C0023A-24R-5,0.0488.559488.890370-C0023A-24R-5,127.5489.738490.165Hemipelagic mudstone and a calcareous mudstone cut by a fault and instruded by a gravel dyke.The gravel in the dryke has clasts of pummice, scoria, and large fragments of biotite and plagioclase and basic vesicular lava with mineralised veisicles.Most similar to drill hole fill encountered in cores 1S amd 2S.2016-09-29T13:11:58
370-C0023A-24R-6,0.0489.738490.165370-C0023A-24R-6,129.5490.935491.460Hemiplegaic mudstone with heavy bioturbation.Pyritisaion 0-155 cm and 95-125 cm.Tuff horision at 80 to 89 cm showing horizontal bedding.2016-09-30T10:40:04
370-C0023A-24R-7,0.0490.935491.460370-C0023A-24R-7,130.5492.142492.765Hemipelagic mudstone, bioturbation with pyritisation along burrows and also as noduels.Both glauconitic and ash laminae are disrupted.2016-09-29T13:52:59
370-C0023A-24R-8,0.0492.142492.765370-C0023A-24R-8,95.0493.200493.715Calcareous hemipelagic mudrocks with bioturbation.Volcanic tuff at 49-53 cm, has load structure in its base and is bioturbated with pyritisation.Volcanic sandstone base contains biotite and clasts of pummice.49 cm horizontal bedding deduced by volcanic tuff layer.2016-09-30T10:41:18
370-C0023A-24R-9,0.0493.200493.715370-C0023A-24R-9,73.0493.695494.445Calcareous mudstone, bioturbated with pyritisation as nodules and along burrows2016-09-29T14:52:10
370-C0023A-24R-CC,0.0493.695494.445370-C0023A-24R-CC,33.0494.000494.775Calcareous hemipelagic mst, same as 24R-7.2016-09-29T14:57:39
370-C0023A-25R-1,0.0494.000494.000370-C0023A-25R-CC,20.0502.380502.380Bioturbated mudstone and calcareous mudstones with sparse silt laminae. A small amount of dark igenous clasts including glass, biotite and amphiboles are present in siltstone-beds, silt-laminae and volcaniclast-bearing sandstones. Burrows are filledwith quartz, vitric-volcanic glass and dense opaque minerals. Bioturbation truncates many laminae and other ichnofabrics.Healed faulting observed in 25R-5,0-89cm. One fault cuts a trace fossil and shows 8.5 cm displacement with a normal sense of movement2016-10-23T06:31:57
370-C0023A-25R-1,0.0494.000494.000370-C0023A-25R-1,105.0495.500495.500Mudrock with bioturbation and pyrite nodules.Missing interval inferred from adjacent intervals and XCT image as mudrock. Not certain if it is calcareous.2016-09-30T04:40:20
370-C0023A-25R-2,0.0495.500495.500370-C0023A-25R-2,91.5495.965495.965Missing interval inferred from adjacent intervals and XCT image as mudrock. Not certain if it is calcareous. Probably bioturbated.2016-09-30T04:41:09
370-C0023A-25R-3,0.0495.965495.965370-C0023A-25R-3,86.5496.830496.830Missing interval inferred from adjacent intervals and XCT image as mudrock. Not certain if it is calcareous. Probably bioturbated.2016-09-30T04:41:35
370-C0023A-25R-4,0.0496.830496.830370-C0023A-25R-4,126.5498.950498.950Bioturbated mudrock. The mudrock contains <1% dense minerals (amphiboles). Numerous burrows are filled with white materials consisting quartz crystals, vitric glass and 3-5% dense minerals (amphiboles).Missing interval inferred from adjacent intervals and XCT image as mudrock.2016-09-30T04:44:10
370-C0023A-25R-5,0.0498.950498.950370-C0023A-25R-5,137.5499.470499.4701-106 MudrockBurrows are filled with white materials with similar compotions to those in sec 4. Some are filled with black materials with abundant pyrite.126-137 Calcareous mudrock0-20 cm healed fault cutting trace fossil.The displacement is 8.5 cm on the cutting plane.67-80 cm healed fault.81-89 cm healed fault.2016-09-30T10:48:31
370-C0023A-25R-6,0.0499.470499.470370-C0023A-25R-6,139.0500.860500.860Calcareous mudrock.A 2 cm pyrite nodule at 103-104.2016-09-30T05:01:40
370-C0023A-25R-7,0.0500.860500.860370-C0023A-25R-7,132.0502.180502.180Mudrock and calcareous mudrockNumerous quartz aggregates34-37.5 Silt interval, fines upwards. Consists of lithic fragments and glass. Low carbonate content. At its bottom is a 0.2 cm thick ash layer.2016-09-30T06:00:15
370-C0023A-25R-CC,0.0502.180502.180370-C0023A-25R-CC,20.0502.380502.380MudrockNumerous quartz aggregates and some pyrite nodules2016-09-30T06:03:47
370-C0023A-26R-1,0.0503.500503.500370-C0023A-26R-CC,21.5511.870511.870Calcareous bioturbated mudstones, bioturbated mudstones and beds of volcanic sediments (lithologies similar to 21R-25R). Nearly all the beds of volcaniclastic sediments have bedforms close to their base indicating depositionfrom moving fluids (debris flow or turbidite-origin) and bioturbated tops. Silt laminations are present in hemipelagic mudstones but in many cases silt laminae are cut by burrows and bioturbation.Volcanic mudstone at 26R-3,89-90cm disrupted by bioturbation across its entire thickness.2016-10-23T07:44:28
370-C0023A-26R-1,0.0503.500503.500370-C0023A-26R-1,98.0504.480504.480Calcaerous hevaily bioturbated mudstone. Some banding is created by a predominance of chondrites and lesser bioturbation.2016-09-30T06:01:22
370-C0023A-26R-2,0.0504.480504.480370-C0023A-26R-2,104.0505.520505.520Black mudstones, low silt cotent and bioturbation.Ash layer at 80 -90 2 cm has ripple marks at base and is inverse graded. It grades from pale fine ash through to med-sand igenous clasts that have intermeadiate mineralogy; e.g. biotite and plagioclase.91 cm horizontal bedding deduced by ash layer.2016-09-30T11:06:30
370-C0023A-26R-3,0.0505.520505.520370-C0023A-26R-3,135.0506.870506.870Calcareous and hemipelagic mudstone - heavily bioturbatedAsh layer at 112 to 103 has flat base, but dewatering and loading structures that run through volcaniclastic mudstone and underlying tuff.Tuff has med-sand size clasts of acidic composition; e.g. biotite, plagioclase and little clear glassy fragments. Volcaniclastic mudstone is organe in colour.87-88 cm horizontal bedding deduced by tuff layer.111 cm horizontal bedding deduced by tuff layer.2016-09-30T11:08:14
370-C0023A-26R-4,0.0506.870506.870370-C0023A-26R-4,85.0507.720507.720Infered to be same lithology as 26R-52016-09-30T06:48:28
370-C0023A-26R-5,0.0507.720507.720370-C0023A-26R-5,106.5508.785508.785Calcareous hemipelagic mudstone. Silt lamiane are cut by burrows. Somw burrows ash filledPyritisation confined to nodules2016-09-30T06:46:10
370-C0023A-26R-6,0.0508.785508.785370-C0023A-26R-6,131.0510.950510.950Calcareous bioturbated mudstoneSome banding is caused by regions containing only chondrities burrows and pyritisation.Volcanic ash layer at base contains intermeadiate igneous clasts. e.g. biotite ad plagioclase.2016-09-30T08:23:54
370-C0023A-26R-7,0.0510.950510.950370-C0023A-26R-7,126.0511.355511.35565 cm horizontal bedding deduced by ash layer.2016-09-30T11:09:18
370-C0023A-26R-8,0.0511.355511.355370-C0023A-26R-8,30.0511.655511.655Calcareous bioturbated mudstone.Mudstone from 20-22 cm is less bioturbated and less calcareous2016-09-30T10:39:14
370-C0023A-26R-CC,0.0511.655511.655370-C0023A-26R-CC,21.5511.870511.870Calcareous bioturbated mudstone2016-09-30T10:45:35
370-C0023A-27R-1,0.0513.000513.000370-C0023A-27R-CC,19.0515.380515.380Bioturbated calcareous mudstone. Mudstones are similar to 26R but silt and sand laminae are infrequent and not thick - e.g. pelagic grains are common and the silt fraction is often sparse and mostly comprises biolcasts, with minor quartz and micrite.2016-10-23T07:06:58
370-C0023A-27R-1,0.0513.000513.000370-C0023A-27R-1,98.0513.980513.980Bioturbated calcareous mudstone2016-09-30T09:03:41
370-C0023A-27R-2,0.0513.980513.980370-C0023A-27R-2,121.0515.190515.190Bioturbated calcareous mudstone. Some intervals are less bioturbated, have a hgher clay content and appear darker.2016-09-30T08:56:46
370-C0023A-27R-CC,0.0515.190515.190370-C0023A-27R-CC,19.0515.380515.380Same lithology as 27R-2.2016-09-30T08:59:06
370-C0023A-29R-1,0.0532.000532.000370-C0023A-29R-CC,15.5533.965533.965Heavily bioturbated calcareous mudstone similar to 27R. Silt laminae are infrequent and where present are cut by burrows or are discontinuous or wispy. The first occurrence of Trench-style turbidites (muddy turbdites with silt and sand laminations),taken as boundary between Transitional facies and Upper Shikokou Basin facies.2016-10-23T07:30:16
370-C0023A-29R-1,0.0532.000532.000370-C0023A-29R-1,103.0533.300533.300Heavily bioturbated calcareouos mudstoneSilt laminae were present are cut by burrows and discontinuous2016-09-30T11:53:11
370-C0023A-29R-2,0.0533.300533.300370-C0023A-29R-2,78.0533.810533.810Heavily bioturbated calcareouos mudstoneSilt laminae were present are cut by burrows and discontinuous2016-09-30T11:53:55
370-C0023A-29R-CC,0.0533.810533.810370-C0023A-29R-CC,15.5533.965533.965Heavily bioturbated calcareouos mudstoneSilt laminae were present are cut by burrows and discontinuous2016-09-30T11:55:53
370-C0023A-30R-1,0.0536.000536.000370-C0023A-30R-CC,12.5539.620539.620Heavily bioturbatred mudstone and calcareous mudstone with dark tuffaceous sandstone layer. The tuffaceous sandstone has sole marks at base and is a mixture of vitric-volcanic ash fragments and intermeadiate mafic volcaniclasts(e.g. biotite and plagioclase) along with mud.Healed faulting observed 30R-5, 37-55cm.2016-10-23T07:38:32
370-C0023A-30R-1,0.0536.000536.000370-C0023A-30R-1,122.0537.220537.220Bioturbated. Not calcareous (but does contain carbonate shell-clasts). Pyritised in places, notably along bedding planes.Silt laminae are disrupted.Burrows also contain silt and ash.2016-09-30T12:17:01
370-C0023A-30R-2,0.0537.220537.220370-C0023A-30R-2,129.0538.510538.510Hemipelagic calcareous mudstone with an ash layer ~ 6 cm thick. At base is coarse grained sandstone but at top it has been heavily bioturbatred and mixed with mudstone above.Top interval (0-7 cm) infered to be non-calcareous and match lithology in section 1 because it contains less pyrite andfrom section in X-CT it appears more worn. 55 cm horizontal bedding deduced by ash layer.2016-10-02T06:27:33
370-C0023A-30R-3,0.0538.510538.510370-C0023A-30R-3,98.5539.495539.495Calcareous hemipelagic mudstone logged from working half.very heavily bioturbatred (laminae can not be traced latterally across core easily).37-55 cm healed fault.2016-10-02T06:28:32
370-C0023A-30R-CC,0.0539.495539.495370-C0023A-30R-CC,12.5539.620539.620Heavily Bioturbated calcareous mudstone.As 30R-3.2016-09-30T05:29:10
370-C0023A-31R-1,0.0541.000541.000370-C0023A-31R-7,93.5549.205549.205Heavily bioturbated mudstones and calcareous mudstones with volcaniclastic sandstones and mudstones (Similar to 30R). Tuffs and volcaniclastic sandstones and mudstones are the same as for previous sections where bioturbation mixes the tops of beds wiwith overlying mudstones. Silt content is concentrated in burrows and contains ash and bioclasts.Normal faulting with slickenlines observed 31R-2 ,59-66cm2016-10-23T12:34:49
370-C0023A-31R-2,0.0542.230542.230370-C0023A-31R-2,137.0543.600543.600Bioturbated mudstone with heavy pyritisation.59-66 cm normal fault.2016-10-02T06:29:41
370-C0023A-31R-3,0.0543.600543.600370-C0023A-31R-3,109.5544.695544.695Bioturbated mudstones, base is calcareous. Silt content is concentrated in burrows.95-95 cm. Volcanoclastic sandstone and mudstone contains biotite, clasts of scoria, plagioclase and angular quartz. Relatively little glass.2016-09-30T14:07:41
370-C0023A-31R-4,0.0544.695544.695370-C0023A-31R-4,126.5545.960545.960Bioturbated mudstones, small interval in middle is calcareous. Silt content is concentrated in burrows.95-95 cm. Volcanoclastic sandstone and mudstone contains biotite, clasts of scoria, plagioclase and angular quartz. Relatively little glass.2016-09-30T14:06:26
370-C0023A-31R-5,0.0545.960545.960370-C0023A-31R-5,131.0547.270547.270Bioturbated mudstone with high pyritisation and silt fraction rich in intermeadiate volcaniclastic minerals2016-09-30T16:20:34
370-C0023A-31R-6,0.0547.270547.270370-C0023A-31R-6,100.0548.270548.270Bioturbated mudstone with high pyritisation and silt fraction rich in intermeadiate volcaniclastic minerals2016-09-30T16:07:23
370-C0023A-31R-7,0.0548.270548.270370-C0023A-31R-7,93.5549.205549.205Bioturbated mudstone with high pyritisation and silt fraction rich in intermeadiate volcaniclastic minerals2016-09-30T16:26:09
370-C0023A-32R-1,0.0550.500550.500370-C0023A-32R-3,121.0553.310553.310Heavily bioturbated mudstones and calcareous mudstones. Burrows are often filled with calcite, vitric-volcanic glass and pyrite. Numerous isolated, mm-size aggregates of sponge spicules.Healed faulting observed at 32R-1,34-44 cm to 32R-3,41-48cm.2016-10-23T12:40:39
370-C0023A-32R-1,0.0550.500550.500370-C0023A-32R-1,107.0551.570551.570Missing intervals inferred from adjacent intervals and XCT image.Bioturbated mudrock. Burrows are usually filled with carbonate-rich materials and vitric glass.25.5-38 Numerous isolated aggregates of sponge spicules <0.2cm.35-45 cm healed fault.2016-10-02T06:31:23
370-C0023A-32R-2,0.0551.570551.570370-C0023A-32R-2,53.0552.100552.100Inferred as bioturbated calcareous mudrock from adjacent intervals and XCT image.2016-09-30T18:05:56
370-C0023A-32R-3,0.0552.100552.100370-C0023A-32R-3,121.0553.310553.310The upper sample consists of calcareous mudrock while the lower sample is less calcareous. The transition occurs in the missing interval.Bioturbated mudrock.There are numerous isolated aggregates of sponge spicules (0.1 cm in size) and pyritized burrows.41-48 cm healed fault.2016-10-02T06:32:08
370-C0023A-33R-1,0.0560.000560.000370-C0023A-33R-CC,45.0569.500570.540Heavily bioturbated mudstones and calcareous mudstones with volcaniclastic sandstones and mudstones (Similar to 30R). Tuffs and volcaniclastic sandstones and mudstones are the same as for previous sections where bioturbation mixes the tops of bedswith overlying mudstones. Thick tuff-bed in 33R has compositional grading and the dark and light layers are compositionally similar to 36R.Healed faulting observed in 33R-5,84-105cm. and normal faulting with slickenlines observed in 33R-7,12.5-19cm.This core was drilled with high-density drilling mud (milky orange in colour).2016-10-23T13:49:13
370-C0023A-33R-1,0.0560.000560.000370-C0023A-33R-1,11.0560.990560.110Mudrock with an interval of tuffaceous sandstone.The tuffaceous sandstone fines upwards from sandy to silty. Paler than the mudrock in colour. Contains biotite.9 cm Four aggregates of sponge spicules (0.3-0.5 mm)2016-10-01T04:34:55
370-C0023A-33R-2,0.0560.990560.110370-C0023A-33R-2,141.5561.375561.525Mudrock with intervals of graded tuffaceous sandstone. Isolated white burrows or aggregates of sponge spicules (mm-size) throughout the section37-51:Fining upwards. Flame structure and bioturbation at the top of light-grey mud.Below the mud is dark grey medium sand, black coarse sand, and black+grey coarse sand. The base is not sharp. It is mixed with the unit below. Consists of quartz, smectitie and glass.51-52: Medium tuffaceous sand, grey in colour.52-55: Fining upwards. 52-53 is black mud. Its flame structure 53-55 is medium grey sand. 1110 pyritized burrows.112-123 Numerous zoophycos burrows (horizontal) at 2 cm-interval. 134, 137, 141 zoophycos burrows (horizontal) 55.5 cm horizontal bedding deduced by ash layer.2016-11-05T18:51:23
370-C0023A-33R-3,0.0561.375561.525370-C0023A-33R-3,142.0562.654562.945Missing interval inferred from the previous section and the XCT image. Transition from mudrock to calcareous mudrock is not knwon.2016-10-01T15:44:22
370-C0023A-33R-4,0.0562.654562.945370-C0023A-33R-4,141.5563.930564.360This section was drilled with high-density drilling mud (milky orange in colour).Missing interval inferred with adjacent intervals and XCT imagne.Calcareous mudrock and mudrock, bioturbatedIsolated white burrows or aggregates of sponge spicules (mm-size)13 pyrite nodule (1 cm)17.5 pyrite nodule (0.2 cm)26.5-29 Very fine black mud, bioturbated. The bottom is a thin layer (1-3 mm) of grey ash29.5-31 Bioturbated silty clay, 44 Pyrite nodule (0.5 cm) 55 Pyrite nodule (1 cm) 29 cmhorizontal bedding deduced by lamination.2016-10-02T06:35:39
370-C0023A-33R-5,0.0563.930564.360370-C0023A-33R-5,143.5565.223565.795Heavily bioturbated mudrock. Burrows are usually filled with pyritized materials.This section was drilled with high-density drilling mud (milky orange in colour).42-143 Numerous intervals of green silty clay layer in which vitric glass dominants.The intervals are not always clear with heavy bioturbation84-93 cm healed fault.94-106 cm healed fault.2016-10-02T06:37:14
370-C0023A-33R-6,0.0565.223565.795370-C0023A-33R-6,141.5566.499567.210Heavily bioturbated mudrock, with an interval of tuffaceous sandstone.Bioturbation masks the original structure of the mudrock.45.5-78.5 Numerous green silty clay layer in which vitric glass dominants.The exact intervals are not clear due to heavy bioturbation. 135-138.5 Black coarse sand fines upwards into mud. Previous studies on similar layers find amphibole, biotite and scoria inside. There is flame structures at the top of this layer.The base is very sharp.This section is drilled with high-density drilling mud.138.5 cm horizontal bedding deduced by ash layer.2016-10-02T06:38:12
370-C0023A-33R-7,0.0566.499567.210370-C0023A-33R-7,141.0567.770568.620Calcareous mudrock, slightly bioturbated15-16 Black, coarse sand at one side of the fault.Missing interval inferred from XCT image.This section is drilled with high-density drilling mud.12.5-19 cm reverse fault with slickenline and step.2016-10-02T06:39:19
370-C0023A-33R-8,0.0567.770568.620370-C0023A-33R-8,147.0569.940570.900Bioturbated mudrock.120-123 Silty layer which fines upwards. Heavily bioturbated.Missing intervals inferred from XCT image and adjacent intervals.2016-10-01T16:34:46
370-C0023A-33R-CC,0.0569.940570.900370-C0023A-33R-CC,45.0569.500570.540Calcareous mudrock, heavily bioturbated.4 Zoophycos, horizontal43.5-45.5 Pyrite nodule (1 cm) and a tuff fragment (1 cm)2016-10-01T04:39:22
370-C0023A-34R-1,0.0569.500569.500370-C0023A-34R-CC,9.0571.500571.500Heavily bioturbated mudstones, calcareous mudstones and a 20 cm thick tuffaceous sandstones (Similar to 30R). The tuff contains gravel-sized clasts of pumiceand a darker layer richer in opaques and clay minerals. Evidence of grading within the bed. Similar to 31R.2016-10-23T12:53:13
370-C0023A-34R-1,0.0569.500569.500370-C0023A-34R-1,79.0570.290570.2901-7 Mudrock7-12.5 Calcareous mudrockMissing interval inferred from adjacent intervals and XCT image.Some aggregates of spong spicules (0.3 mm each in size)Moderate bioturbation. Burrows are mostly filled with dark, pyritized materials.2016-09-30T20:38:16
370-C0023A-34R-2,0.0570.290570.290370-C0023A-34R-2,112.0571.410571.410Missing interval inferred from adjacent intervals and XCT image.Mudrock90-102 are three intervals of volcanic sediments:90-93.5 White bioturbated tuff layer (92-93.5) without shape bottom or top. The bottim is infiltrate into the mud layer below.On top of it is black, bioturbated tuffaceous mud (90-92)93.5-100 A graded tuff interval.At the base is a coarsest black tuff layer (99-100, size of coarse sand), at the middle is light grey tuff (94-99, size of medium sand), and on top is dark grey tuff (93.5-94). 100-102 is another graded tuff layer.Grain size is corase along the whole unit, but the colour is differentiated into light grey at the bottom and dark grey on top. The base is very sharp.102 cm horizontal bedding deduced by ash layer.2016-10-02T06:40:41
370-C0023A-34R-CC,0.0571.410571.410370-C0023A-34R-CC,9.0571.500571.5001-7 Calcareous mudrock7-9 Grey tuff, grain size in the range of medium sand. Consistly mostly of vitric glassMissing interval inferred from adjacent intervals and XCT image.2016-09-30T20:56:59
370-C0023A-35R-1,0.0573.500573.500370-C0023A-35R-CC,35.5580.360580.360Heavily bioturbated mudstones and calcareous mudstones with volcaniclastic sandstones and mudstones (Similar to 30R and 31R). Ash layers contain black glassy -and dark mud-clasts. Cross-lamina within tuff are picked out by opaque minerals and clay.Tuff-bed grades into overlying mudstone.Micro faults within tuff at 35R-2 46-50 cm. Injected sand vein at 35R-2, 50-55cm. Has tigmatic structures and sand as is same as in 35 R1.2016-10-23T13:08:49
370-C0023A-35R-1,0.0573.500573.500370-C0023A-35R-1,122.0574.720574.720Bioturbated calcareous mudstone45-42 cm Volcanic mudstone. Mudstone mixed with volcanic ash by bioturbation. Top has flame structures cut by burrows.65-70 cm Grey pumaceous sandstone, base not seen but top mixed into overlying mudstone by bioturbation.2016-10-01T04:46:04
370-C0023A-35R-2,0.0574.720574.720370-C0023A-35R-2,76.0575.480575.480Calcareous and non-calcareous bioturbated mudstone.30-41 cm Ash layer with black glassy and mudy fragments. Clast of diorite.Has cataclasis/deformation bands. (Micrograph available)46-50 cm Injected sand vein.Has tigmatic structures and sandy as is same as in 35R1.2016-10-01T07:22:10
370-C0023A-35R-5,0.0577.745577.745370-C0023A-35R-5,105.0578.795578.795Heavily bioturbated mudstone with silt clasts that include volcanic glass and intermeadiate igneous minerals, biotite, plagioclase and amphiboles.2016-10-01T06:26:29
370-C0023A-35R-6,0.0578.795578.795370-C0023A-35R-6,121.0580.500580.500Heavily bioturbated mudstone.Silt ash layer at 105 to 108 is mixed into mud unit above by bioturbation19-25 cm healed fault.2016-10-02T06:42:17
370-C0023A-35R-CC,0.0580.500580.500370-C0023A-35R-CC,35.5580.360580.360Bioturbated mudstone26-29 cm Volcaniclastic mudstone created by bioturbation mixing volcanic sediments into mud.29-32 cm Volcaniclastic sandstone contain clasts of intermeadiate igneous rocks, e.g. biotite, plagioclase and pumacious fragments/glass.Rippled mud and sand lamiane at based.31 cm horizontal bedding deduced by ash layer.2016-10-02T06:43:14
370-C0023A-36R-1,0.0583.000583.000370-C0023A-36R-8,128.5592.265592.265Heavily bioturbated mudstones and calcareous mudstones with volcaniclastic sandstones and volcaniclastic mudstones (Similar to 30R, 31R and 35R). The few beds of volcaniclastic sediments in core 36R are affected by bioturbation. The intraformationalbreccia is found in a section affected by drilling disturbance (fracturing). The breccia contains angular clasts of the mudstone found in adjacent formations.Healed faults observed 36R-2,62-76 cm and reverse fault and slickenline 36R-3,74-79cm.2016-10-23T14:07:03
370-C0023A-36R-1,0.0583.000583.000370-C0023A-36R-1,108.0584.800584.800Bioturbated mudstone with heavy pyritisationPyritised fossil from 63-68 cmRelict silt horizion 97 tp 101 cm Heavily bioturbatedCalcareous from 101 to 1092016-10-01T08:28:46
370-C0023A-36R-2,0.0584.800584.800370-C0023A-36R-2,133.0585.410585.410Bioturbated mudstone with heavy pritisation. Silt layers at 72.5 and 90 cm are heavily bioturbated. Fault cuts silt layer 72.5 cm. Silt layer is pale and contains a small amount of glass, but other intermeadiate igneous silt-clasts are more common.62-79 cm healed fault.70 cm horizontal bedding deduced by ash layer.2016-10-02T06:46:52
370-C0023A-36R-3,0.0585.410585.410370-C0023A-36R-3,143.0586.840586.840Bioturbated calcareous mudstone.Pyritisation is localised around a healed fault at 120 cm74-79 cm reverse fault with slickenline.2016-10-02T06:47:50
370-C0023A-36R-4,0.0586.840586.840370-C0023A-36R-4,123.5588.750588.750Bioturbated calcareous mudstone.19 to 31 cm Uncemented Breccia, comprisinging angular jigsaw fragments with aligment to faults (and conjugate to it).2016-10-01T10:51:04
370-C0023A-36R-5,0.0588.750588.750370-C0023A-36R-5,123.5589.310589.310Biuoturbated Calcareous Mudstone2016-10-01T11:29:16
370-C0023A-36R-6,0.0589.310589.310370-C0023A-36R-6,58.5589.895589.895Infered, from X-CT and residual samples to be the same lithology as 36R-52016-10-01T11:31:46
370-C0023A-36R-7,0.0589.895589.895370-C0023A-36R-7,108.5590.980590.980Biotrbated mudstone.107 cm Black volcaniclastic sandstone (little ash content)Load structure at top, but base not seen2016-10-01T11:44:29
370-C0023A-36R-8,0.0590.980590.980370-C0023A-36R-8,128.5592.265592.265Bioturbated mudstone and calcareous mudstone.Thin green Ash band at 92 cm2016-10-01T11:55:46
370-C0023A-37R-1,0.0592.500592.500370-C0023A-37R-CC,20.5596.780596.780Heavily bioturbated mudstones and calcareous mudstone with volcanic ash layers. Ash layers are present as laminae or less than 2 cm thick that are typically disrupted by burrowing.2016-10-23T15:57:35
370-C0023A-37R-1,0.0592.500592.500370-C0023A-37R-1,8.5592.585592.585Pyritic bioturbated mudstoneAsh layers at 5 amd 6 cm.2016-10-01T12:44:48
370-C0023A-37R-2,0.0592.585592.585370-C0023A-37R-2,71.0593.295593.295Pyritic bioturbated mudstoneAsh layer at 0.5 cm2016-10-01T12:40:17
370-C0023A-37R-3,0.0593.295593.295370-C0023A-37R-3,114.0594.435594.435Pyritic bioturbated mudstoneAsh layers at 96.5, 99, 101.5 104.5 cm92-102 cm mud injectite.2016-10-02T06:52:19
370-C0023A-37R-4,0.0594.435594.435370-C0023A-37R-4,36.0594.795594.795Bioturbated calcareous mudstone with volcanic ash layers.2016-10-01T13:19:52
370-C0023A-37R-5,0.0594.795594.795370-C0023A-37R-5,150.0596.295596.295Bioturbated mudstones and calcareous mudstone with volcanic ash layers.Relative to other sections from this core this section was heavily disrupted by bioturbation and ash-layers were hard to distinguish.2016-10-01T14:16:59
370-C0023A-37R-6,0.0596.295596.295370-C0023A-37R-6,28.0596.575596.575Bioturbated calcareous mudstone with volcanic ash layers at 2,4, 14-16 and 24 cmmost layers are geavily disrupted by burrows.2016-10-01T13:54:11
370-C0023A-37R-CC,0.0596.575596.575370-C0023A-37R-CC,20.5596.780596.780Bioturbated calcareous mudstone with volcanic ash layers at 3 ,5 ,15 cm2016-10-01T13:44:02
370-C0023A-38R-1,0.0602.000602.000370-C0023A-38R-CC,10.5610.550610.550Heavily bioturbated mudstones and calcareous mudstones with volcaniclastic sandstones and volcaniclastic mudstones (Similar to 30R, 31R and 35R). Graded bedding and cross bedding are present in volcanic sandstone along with other bedforms.Most volcanic sandstones grade into volcanic mudstones due to bioturbation. Many single-lamina green bentonite beds present.Healed faulting observed in, reverse faulting with slickenlines observed in 38R-7,21-29 cm.2016-10-23T16:17:11
370-C0023A-38R-1,0.0602.000602.000370-C0023A-38R-1,96.0602.960602.960bioturbated calcareous mudstone with volcanic ash laminae.Some ash laminae are cut by burrows.Volcanic ash layer at 50 to 52 cm, and volcanic mudstone 64-68 and sandstone with flow strucutres at 68 to 77 (inverse reverse grading and ripple.2016-10-01T16:32:37
370-C0023A-38R-2,0.0602.960602.960370-C0023A-38R-2,84.0603.800603.800Bioturbated calcareous mudstone2016-10-01T16:37:40
370-C0023A-38R-3,0.0603.800603.800370-C0023A-38R-3,117.5604.975604.975Infered from X-CT and overlying lithology, suplimented by IWT and COM gas.Calcareous mudstone with small amount of vitric glass.2016-10-02T05:07:03
370-C0023A-38R-4,0.0604.975604.975370-C0023A-38R-4,143.5606.410606.410Infered from X-CT and overlying lithology, suplimented by IWT and COM gas.Less pyritic than 38R-3.Calcareous mudstone with small amount of vitric glass.2016-10-02T05:05:59
370-C0023A-38R-5,0.0606.410606.410370-C0023A-38R-5,144.0607.850607.850Calcareous mudrock, heavily bioturbated12-18 cm mud injectite.2016-10-02T06:53:12
370-C0023A-38R-6,0.0607.850607.850370-C0023A-38R-6,75.0608.600608.600Heavily bioturbated calcareous mudrock. There are laminae of green, silty clay layers consisting of dominantly glass. But the laminae are distrubed by burrowing.2016-10-01T18:48:29
370-C0023A-38R-7,0.0608.600608.600370-C0023A-38R-7,135.0609.950609.9501-24 Coarse tuff interval with flaser bedding formed by dark and pale grey grains. The dark grains have higher mafic content such as biotite and amphiboles. Shows 2 graded bedding.24-37, 71-79 Calcareous mudrock, rich in carbonate and gives a paler colour79-84 Another tuff layer showing graded bedding and flame structure.84-136.5 Calcareous mudrock, rich in carbonate, heavily bioturbatedMissing intervals inferred from XCT image and adjacent intervals.21-29 cm reverse fault.82 cm horizontal bedding deduced by ash layer.2016-10-02T06:59:11
370-C0023A-38R-CC,0.0609.950609.950370-C0023A-38R-CC,10.5610.550610.550Hevaily bioturbated, calcareous mudrock. 1-8 cm has higher carbonate content so it appears paler in colour2016-10-01T22:29:20
370-C0023A-39R-1,0.0611.500611.500370-C0023A-39R-6,38.5617.370617.370Heavily bioturbated mudstones and calcareous mudstones with volcaniclastic sandstones and volcaniclastic mudstones (Similar to 30R, 31R, 35R and 38R). Within the tuffs and volcanic sandstones are ripples, lenticular bedding/ripples andcross lamination (the tuff also has deformation bands). The beds have pronounced grading in both clast type and grainsize (more large igneous crystals at base and more ash at top). Bioturbation at top mixes volcanic sediment into overlying mudstone.Missing intervals inferred from adjacent intervals and XCT image.Deformation band in ash layers at 39R-3,73-95cm.Pyrite mineralisation at base of tuff 39R-3, 93-95 cm.2016-10-23T16:43:21
370-C0023A-39R-1,0.0611.500611.500370-C0023A-39R-1,126.0612.760612.760Heavy bioturbation. Numerous zoophycos (horizontal) in the mudrock portion.There are green silty, vitric glass-rich silty layers disturbed by bioturbation.0-6 Calcareous mudrock, high carbonate content so appears paler in colour A 0.7 cm pyrite nodule 6-9 Reverse grading from fine sand with a higher tuff content at 6 to siltAt 99-118 Paler calcareous mudrock118-120 Flame structure of the tuff layer118-126 Grey tuff, silt size, bioturbated57 cm horizontal bedding deduced by ash layer.2016-10-02T07:00:17
370-C0023A-39R-2,0.0612.760612.760370-C0023A-39R-2,107.0613.830613.8300-3, 17-22, 80-92.5, 93-107 Calcareous mudrock, rich in carbonate content so appear paler3-17 Tuff layer, with flaser bedding, grey in colour 92.5-93Black tuffaceous mudrock with flame structureMissing interval inferred from adjacent intervals and XCT image2016-10-02T12:08:38
370-C0023A-39R-3,0.0613.830613.830370-C0023A-39R-3,95.0614.780614.780Missing interval inferred from adjacent intervals and XCT image. Transition of calcareous mudrock to mudrock is not known. 54-56 Tuffaceous sand; 56-58 Tuffaceous mud; 58-60 Tuffaceous sand, sharp base below; 73-76 Tuffaceous fine sand;76-76.5 Green, silty, glass-rich lamina; 77-83, 89-95 Tuffaceous sandstones fine upwards and show differentiation in colours.At 95 is a thin layer of tuffaceous mud57-59 cm deformation band in an ash layer.64.5 cm horizontal bedding deduced by ash layer.80-95 cm deformation band in an ash layer.2016-10-02T12:11:25
370-C0023A-39R-4,0.0614.780614.780370-C0023A-39R-4,88.5615.665615.665Missing interval inferred from adjacent intervals and XCT image.Mudrock and calcareous mudrock.61-62 Tuff layer with flame structure on top64 cm horizontal bedding deduced by ash layer.2016-10-02T12:12:42
370-C0023A-39R-5,0.0615.665615.665370-C0023A-39R-5,132.0616.985616.985Missing interval inferred from adjacent intervals and XCT images.2016-10-02T00:36:17
370-C0023A-39R-6,0.0616.985616.985370-C0023A-39R-6,38.5617.370617.370Calcareous mudrock with tuff layers.3-8 Tuffaceous sand. Grey at the top and the bottom, black in the middle.27-35 Lenticular bedding of calcareous mud with white tuff8 cm horizontal bedding deduced by ash layer.2016-10-02T12:13:36
370-C0023A-40R-1,0.0621.000621.000370-C0023A-40R-CC,30.5630.440630.440Heavily bioturbated mudstones and calcareous mudstones with volcaniclastic sandstones and volcaniclastic mudstones. Core 40R is a clear example of the two varieties of volcanic sediment present. One is felsic and pale, the other is intermediate incomposition (plagioclase and biotite rich) with clasts of black glassy pumice and amphibole (in many instances one tuff-type grades into the other). Towards the base of the core mudstones are calcareous and contain more ash.Detrital clasts of dark black pumice are also present in the mudstone.Healed faulting observed in 40R-5, 93-101cm, normal faulting with slickenlines observed in 40R-5, 93-133cm.2016-10-23T17:10:27
370-C0023A-40R-1,0.0621.000621.000370-C0023A-40R-1,121.0622.210622.2100-1 Silt or fine sand, black in colour, rich in quartz1-1.5 Mudrock consists mostly clay. Vitric glass is common. Few chlorite. Rare carbonate. Does not react with HCl, unlike shallower mudrock.Silt layers at 14-14.5, 15-16, 26, 27, 28, 29, 30Missing interval inferred from adjacent intervals and XCT images.15.5 cm horizontal bedding deduced by lamination.2016-10-02T12:15:50
370-C0023A-40R-2,0.0622.210622.210370-C0023A-40R-2,141.0623.620623.6200-21 Calcareous mudrock21-22 Pale grey mud22-24.5 Dark mud, rich in vitric glass and common in dense minerals. Flame structure at the top24.5-32.5 Mudrock, similar composition to that in section 1. Low in carbonate.50-75 Mudrock75-117.5Calcareous mudrock Missing intervals inferred from XCT images and adjacent intervals.This section is immersed in high-density drilling mud.26 cm horizontal bedding.2016-10-02T12:17:04
370-C0023A-40R-3,0.0623.620623.620370-C0023A-40R-3,141.0625.300625.300This section is immersed in high-density drilling mud.Missing intervals inferred from adjacent intervals and XCT images.10-45 Calcareous mud45-63 Mudrock63-74 A tuffaceous fining upwards sequence. Dark fine sand at 63 and coarse sand at 74.The coarse sand is a mixture of dark and pale grey grains.74-82 Tuffaceous mud82-110 Calcareous mudrock91, 93, 94 Dark, thin silty layers101, 102 Two pyritized burrows with dark halos79-80 cm horizontal bedding deduced by ash layer.2016-10-02T12:19:05
370-C0023A-40R-4,0.0625.300625.300370-C0023A-40R-4,141.0626.440626.440Bioturbated mudstone.Carbonate cement limited to base from ~65cm to 143 cm93-101 cm normal fault.125-133 cm normal fault.127-132 healed fault.2016-10-02T12:21:29
370-C0023A-40R-5,0.0626.440626.440370-C0023A-40R-5,141.0627.850627.850Bioturbated Mudstone6-8 cm volcanic sediment see in XCT, black fragements of gloass tuff in IWT sample.115-122 cm Volcaniclastic sst - with black galssy and clasts typical of intermeadiate mineralogy e.g. biotite, plagioclase.122-124 cm white tuff layer - heavily disrupted by both flame structures and burrows2016-10-02T06:10:44
370-C0023A-40R-6,0.0627.850627.850370-C0023A-40R-6,141.0629.260629.260Bioturbated mudstone with small clast of black pummice.Volcaniclastic mudstone 0-6 cm, formed from mixing with underlying layer durign bioturbation. 6-11 cm banded volcaniclastic sandstone that grades from medium sand to fine sand.Rippled base and slight disruption on top.11-16 tuff layer, base is white and top is dark. Top contains biotite, and dark glassy clasts of pummice.76-85 cm dark volcanic sadnstone and mudstone.Base of sandstone/tuff is rippled, top grades into mud due to bioturbation.2016-10-02T10:37:28
370-C0023A-40R-7,0.0629.260629.260370-C0023A-40R-7,87.5630.135630.135Bioturbated mudstone with small clast of black pummice.Tuffaceous sandstone with rippled base and high dark pummice content 13-28 cm. Grades from dark to light from base to top.Volcaniclastic mudstone 0-6 cm, formed from mixing with underlying layer durign bioturbation. Volcaniclastis sandstone grades from light to dark from base to top. base is also rippled.45-51.5 sandstone/tuff is rippled, top grades into mud due to bioturbation34 cm horizontal bedding.51 cm horizontal bedding.2016-10-02T12:22:53
370-C0023A-40R-CC,0.0630.135630.135370-C0023A-40R-CC,30.5630.440630.440Bioturbated mudstone with small clast of black pummice.Volcaniclastic sandstone froom 2 - 10 cm, has high pummice content and is dark. Top is bioturbated and base has flame structures, no flow structures.2016-10-02T10:43:23
370-C0023A-41R-1,0.0630.500630.500370-C0023A-41R-CC,21.0640.000640.880Bioturbated mudstones and calcareous mudstones. Above 41R-6,70 cm the volcanic sediments are present and the mudstone contain green ash-rich laminae (many are cut by burrows). Beneath 637 mbsf there is sharp diagonal contact and volcanic ash becomesrare. Separating the layers is a black homogenous mudstone that contains numerous slickened surfaces.In the upper part, horizontal bedding is horizontal inferred from contact between ash and underlying mudstone.In the lower part, slightly dipping bedding inferred from contact between ash layer and underlying mudstone. Through out the core reverse faulting with slicken lines is observed.2016-11-09T02:37:07
370-C0023A-41R-1,0.0630.500630.500370-C0023A-41R-1,146.0631.836631.960Heavily bioturbated mudstoneAsh layers at 48 to 67 cm and 139-147 cm66 cm horizontal bedding.2016-10-02T16:15:10
370-C0023A-41R-2,0.0631.836631.960370-C0023A-41R-2,79.5632.564632.755Heavily bioturbated mudstoneGreen ash laminae prominent2016-10-02T15:21:02
370-C0023A-41R-3,0.0632.564632.755370-C0023A-41R-3,134.0633.790634.950Logged from XCT and IWT trimmingsHeavily bioturbated calcareous mudstoneSmall volcanic ash content2016-10-02T15:17:47
370-C0023A-41R-4,0.0633.790634.950370-C0023A-41R-4,142.0635.900635.515Heavily bioturbated mudstone and calcareous mudstoneDark Tuff from 0-10 cm.10 cm horizontal bedding.11-13 cm reverse fault.2016-10-02T15:14:27
370-C0023A-41R-5,0.0635.900635.515370-C0023A-41R-5,148.0636.444636.995Heavily bioturbated calcareous mudstoneTuff at 131-135 cm76-79 cm reverse fault cutting a barrow.2016-10-02T14:24:10
370-C0023A-41R-6,0.0636.444636.995370-C0023A-41R-6,140.0637.726638.3950-55 bioturbated calcareous mudstone.55-72 cm unknown homogenous black mudrock. Veins of black mudrock appear in unit aboveRepeated breaking of surfaces reveal slickened surfaces.Likely a fault-rock made of compacted mud.Lack of structure72-140 cmAssumed to be same as mudrock in 41R-757-59 cm gently dipping bedding deduced by ash layer.2016-10-02T17:57:30
370-C0023A-41R-7,0.0637.726638.395370-C0023A-41R-7,66.0638.330639.550Heavily bioturbated mudstone and calcareous mudstoneNo green ash laminae prominent14-15 cm reverse fault.57-60 cm reverse fault.2016-10-02T14:17:09
370-C0023A-41R-8,0.0638.330639.550370-C0023A-41R-8,106.0639.300640.115Heavily bioturbated mudstoneNo green ash laminae prominentMinior but noticable pyrite content18-21 cm reverse fault.2016-10-02T14:12:24
370-C0023A-41R-9,0.0639.300640.115370-C0023A-41R-9,55.5639.808640.670Heavily bioturbated mudstoneNo green ash laminae prominentMinior but noticable pyrite content2016-10-02T14:09:28
370-C0023A-42R-1,0.0640.000640.000370-C0023A-42R-CC,51.5646.440646.440Heavily bioturbated mudstones with distinct lithological differences between burrows and host lithology (described core 43R); burrows contain coarser silt-sized clasts. High number of green-bentonite ash laminae in core may reflect lesser level ofbioturbation.Horizontal bedding deduced from lamination.2016-11-04T07:17:52
370-C0023A-42R-1,0.0640.000640.000370-C0023A-42R-1,105.5641.550641.550Calcareous, heavily bioturbated mudrockMissing interval inferred from XCT image and adjacent intervals.2016-10-02T19:20:53
370-C0023A-42R-2,0.0641.550641.550370-C0023A-42R-2,131.5642.370642.370Mudrock and calcareous mudrock. Bioturbated. Turned into drilling biscuits.2016-10-02T19:24:21
370-C0023A-42R-3,0.0642.370642.370370-C0023A-42R-3,145.5643.825643.8250-22 Mudrock112-145 Mudrock with some calcareous intervalsMissing intervals inferred from adjacent intervals and XCT images.121 cm horizontal bedding2016-10-02T19:30:55
370-C0023A-42R-4,0.0643.825643.825370-C0023A-42R-4,145.5645.280645.280Mudrock turned into drilling biscuits. Infiltration of drilling mud at every crack between the biscuits. Heavily bioturbated 107-108A few white, mm-size concretions with orthoclase, biotite, few carbonate and perhaps zircon; also a dark, 1 -cm long vein consists of pyrite and quartz2016-10-02T19:35:48
370-C0023A-42R-5,0.0645.280645.280370-C0023A-42R-5,64.5645.925645.925Missing interval inferred from adjacent sections2016-10-02T19:41:07
370-C0023A-42R-CC,0.0645.925645.925370-C0023A-42R-CC,51.5646.440646.440Heavily bioturbated mudrock7-8 cm horizontal bedding deduced by ash layer.2016-10-02T19:44:36
370-C0023A-43R-1,0.0649.500649.500370-C0023A-43R-CC,39.5659.000659.990Heavily bioturbated mudstones with distinct lithological differences between burrows and host lithology. Host lithology has high proportion of microcystaline quartz. Authigenic illite flakes are present but often light brown. Opaque content; pyrite,clay (possibly devitrified ash). Very minor Vitric ash and carbonate content. Burrows contain a muddy sand- and silt-bearing fill; light brown in colour, high bioclast content, sub-angular quartz and plagioclase, illite flakes (authigenic) andsmall black pieces of volcanic glass (Pumice). Green-bentonite ash layers are present, bur frequently are wispy or cut by burrows. Sparse silt-and clay-laminae.Reverse faulting with slickenlines observed at top of core (43R-1, 11-13cm).Drilling speed was reduced so there is less biscuitting than former core.2016-10-26T14:16:07
370-C0023A-43R-1,0.0649.500649.500370-C0023A-43R-1,118.0650.569650.680Mudrock. Colour is darker than before. Moderately bioturbatedDrilling speed was decreased so less drilling biscuits.11-13 cm reverse fautl with slickenline and step.2016-10-04T05:34:25
370-C0023A-43R-2,0.0650.569650.680370-C0023A-43R-2,116.5651.624651.845Mudrock, heavily bioturbated84 is a thin layer of distinctive green clay layer with vitiric glassNumerous white burrows or aggregates of sponge spicules at 26-39 and 93-1062016-10-03T00:16:04
370-C0023A-43R-3,0.0651.624651.845370-C0023A-43R-3,146.0652.946653.305Inferred as bioturbated mudrock from adjacent sections and XCT image2016-10-03T00:17:48
370-C0023A-43R-4,0.0652.946653.305370-C0023A-43R-4,152.0654.323654.8250-61 Inferred as bioturbated mudrock from adjacent intervals and XCT image61-137 Calcareous mudrock, bioturbated137-152 Mudrock, bioturbated2016-10-03T00:24:59
370-C0023A-43R-5,0.0654.323654.825370-C0023A-43R-5,148.0655.663656.305Bioturbated calcareous mudrock2016-10-03T00:32:45
370-C0023A-43R-6,0.0655.663656.305370-C0023A-43R-6,140.5656.935657.7100-3 calcareous mudrock, heavily bioturbated3-140 mudrock, heavily bioturbated2016-10-03T00:36:44
370-C0023A-43R-7,0.0656.935657.710370-C0023A-43R-7,77.5657.637658.485Heavily bioturbated mudrock2016-10-03T00:41:18
370-C0023A-43R-8,0.0657.637658.485370-C0023A-43R-8,111.0658.642659.595Heavily bioturbated mudrock and calcareous mudrock2016-10-03T00:43:30
370-C0023A-43R-CC,0.0658.642659.595370-C0023A-43R-CC,39.5659.000659.990Bioturbated calcareous mudrock2016-10-03T00:46:42
370-C0023A-44R-1,0.0659.000659.000370-C0023A-44R-CC,35.5668.500669.415Heavily bioturbated mudstones and calcareous mudstones with distinct lithological differences between burrows and host lithology as described for 43R. The core has a high proportion of burrows and green-bentonite ash is observed only as discontinuouswispy laminations, cut by burrows.Strike slip faults, slicken lines 44R-9, 90 -110cm.2016-10-26T14:44:07
370-C0023A-44R-1,0.0659.000659.000370-C0023A-44R-1,15.0659.137659.150Bioturbated calcareous mudrock2016-10-03T02:26:21
370-C0023A-44R-2,0.0659.137659.150370-C0023A-44R-2,69.5659.771659.845Inferred as mudrock from XCT image. Probably heavily bioturbated2016-10-03T02:27:33
370-C0023A-44R-3,0.0659.771659.845370-C0023A-44R-3,114.0660.811660.985Inferred as mudrock from XCT image. Probably heavily bioturbated2016-10-03T02:27:17
370-C0023A-44R-4,0.0660.811660.985370-C0023A-44R-4,63.0661.385661.615Mudrock38.5 A thin, greenish lamina53-57 An interval of darker colour mudrock. It differs from the paler-colour mudrock (1-53, 57-63) that vitric glass is rare in it. In the paler-colour mudrock, glass is abundant.2016-10-03T02:32:25
370-C0023A-44R-5,0.0661.385661.615370-C0023A-44R-5,135.5662.621662.97081-123 Heavily bioturbated calcareous mudrock87 and 96 are two thin darker layers, tilted at gentle angles. 122.5 is another similar layer which appers more greenish123-136 Heavily bioturbated mudrock132.5 is a thin darker layer similar to those above2016-10-03T03:35:09
370-C0023A-44R-6,0.0662.621662.970370-C0023A-44R-6,134.5663.848664.3150-9 Mudrock; 9-120 Calcareous mudrock125-135 Mudrock 56, 74 Zoophycos burrow, inclined at a gentle angle76-95.5 is an interval with large, angular carbonate-rich clasts (1-3 cm in size).The clasts consist of dominantly calcite with numerous discoaster nannofossils. But there are signs of bioturbation inside the clasts, especially at the lower part of this interval.It is inconclusive if this interval is breccia (perhaps from debris flow) or is just a bioturbated interval. The darker, clayey matric of this interval shows grading in colour. It is darker at 76 and paler at 95.114 Zoophycos burrow, horizontal2016-10-03T08:18:14
370-C0023A-44R-7,0.0663.848664.315370-C0023A-44R-7,117.5664.920665.490Bioturbated calcareous mudrock.Zoophycos2016-10-03T07:21:05
370-C0023A-44R-8,0.0664.920665.490370-C0023A-44R-8,123.5666.460666.725Bioturbated calcareous mudrock,52 to 83 cm some pyririsation2016-10-03T07:27:00
370-C0023A-44R-9,0.0666.460666.725370-C0023A-44R-9,136.0667.287668.8500-105 cm Bioturbated calcareous mudrock105 - 136 cm Bioturbated mudrock98-110 cm fault.2016-10-27T11:18:48
370-C0023A-44R-10,0.0667.287668.850370-C0023A-44R-10,97.5668.176669.600Bioturbated mudrock2016-10-03T08:04:16
370-C0023A-44R-CC,0.0668.176669.600370-C0023A-44R-CC,35.5668.500669.415Bioturbated mudrock2016-10-03T08:05:47
370-C0023A-45R-1,0.0668.500668.500370-C0023A-45R-CC,12.0671.700671.700Heavily bioturbated mudstone with a sparse silt and gravel content that includes pumice (dark black rough glassy clasts), pyrite, plagioclase, (presumed authigenic ) illite, opaque minerals and bioclasts. Interpreted to be caused by the amalgamationof burrows. No continuous green-bentonite ash layers observed (only patches). Little continuous lamination is present although burrow outlines and traces can be seen.2016-10-26T14:56:13
370-C0023A-45R-1,0.0668.500668.500370-C0023A-45R-1,120.5669.705669.705Bioturbated mudstone - same as 45R-22016-10-03T11:17:26
370-C0023A-45R-2,0.0669.705669.705370-C0023A-45R-2,147.5671.180671.180Bioturbated mudstone with a sparse silt to gravel content that includes pummice (dark black rough glassy clasts), pyrite, plagioclase, (presumed authigenic ) illite and opaque minerals.Little volcanic ash.Little continuous lamination is present although burrow outlines and traces can be seen.2016-10-03T11:01:56
370-C0023A-45R-3,0.0671.180671.180370-C0023A-45R-3,40.0671.580671.580Bioturbated mudstoneSame as 45R-22016-10-03T11:15:17
370-C0023A-45R-CC,0.0671.580671.580370-C0023A-45R-CC,12.0671.700671.700Bioturbated mudstoneSame as 45R-22016-10-03T11:14:53
370-C0023A-46R-1,0.0673.000673.000370-C0023A-46R-CC,30.5678.000678.295Heavily bioturbated mudstone and calcareous mudstone with patchy silt and gravel content that includes pumice (dark black rough glassy clasts), pyrite, plagioclase, illite, opaque minerals and bioclasts. Little continuous lamination present, althoughburrow outlines and traces can be seen. Intervals with a high silt content are interpreted to be caused by the amalgamation of burrows. No continuous green-bentonite ash layers observed (only patches).Some reverse faulting and oblique slip fault with slicken lines observed at 46R-4,68-88cm.2016-10-26T17:34:10
370-C0023A-46R-1,0.0673.000673.000370-C0023A-46R-1,121.5674.147674.215Bioturbated mudstone same as 46R-2.2016-10-03T13:01:03
370-C0023A-46R-2,0.0674.147674.215370-C0023A-46R-2,140.0675.469675.615Bioturbated mudstone with a sparse silt to gravel content that includes pummice (dark black rough glassy clasts), pyrite, illite and opaque minerals.Little volcanic ash.Little continuous lamination is present although burrow outlines and traces can be seen.2016-10-03T12:25:26
370-C0023A-46R-3,0.0675.469675.615370-C0023A-46R-3,126.5676.664676.880Bioturbated mudstone same as seem 46R-25-9 cm slightly dipping bedding deduced by ash layer.90-92 cm reverse fault with slickenline.98-101 cm reverse fault with slickenline.109-111 cm oblique-slip fault with slickenline.2016-10-04T05:45:38
370-C0023A-46R-4,0.0676.664676.880370-C0023A-46R-4,111.0677.712677.990Bioturbated mudstone same as 46R-22016-10-03T12:55:52
370-C0023A-46R-CC,0.0677.712677.990370-C0023A-46R-CC,30.5678.000678.295Bioturbated mudstone same as 46 R-22016-10-03T12:58:00
370-C0023A-47R-1,0.0678.000678.000370-C0023A-47R-CC,38.5683.000684.150Heavily bioturbated mudstone and calcareous mudstone with a thin gravelly siltstone bed; gravel content includes pumice (dark black rough glassy clasts), and opaque minerals. Bedforms lost due to bioturbation. Burrows containhigh silt content that includes calcite and bioclasts.47R-1, 51-72cm. Healed faulting system showing normal displacement observed. It shows 2 mm diplacement on the splitting plane by cut bedding.2016-10-28T17:09:15
370-C0023A-47R-1,0.0678.000678.000370-C0023A-47R-1,109.5678.910679.9500-91cm mudrock without a significant detrital clay content. Sedimentary structures hard to identify, accept for black laminations.91-109 bioturbated mudstone - some carbonate cement, and cemented burriws but not calcareous.66-67 cm horizontal bedding deduced by lamination. 55-71 cm healed fault system showing normal displacement by cutting bedding. Displacement is 2mm on the splitting plane.70.5 cm horizontal bedding deduced by lamination.2016-10-04T05:56:35
370-C0023A-47R-2,0.0678.910679.950370-C0023A-47R-2,134.0680.240680.435Bioturbated mudstone not calcareous. Has pummice clasts ranging in size from pebbles to sand sized. Abundant pyrite mineralisation. Carbonate only in burrows.Pumice clast at 64 cm is 2 cm length and contains sulpide mineralisation. Pummice is pale in colour - acid to intermeadiate.2016-10-03T13:48:41
370-C0023A-47R-3,0.0680.240680.435370-C0023A-47R-3,134.5681.142681.780Bioturbated mudstone, similar to 47R-2.Calcareous bioturbated mudstone from 43-65 cm.Silt and sand bearing'/siltstone from 70-74 cm2016-10-03T14:23:35
370-C0023A-47R-4,0.0681.142681.780370-C0023A-47R-4,79.0681.799682.570Bioturbated mudstone simiar t0 47R-2. 39 to 54 cm zoophycos burrow inclined ~20 deg.54-65 deg C zoophycos burrow inclined opposite sense to burrow at 39-54. Note that core is biscuted/rotated.2016-10-03T14:29:31
370-C0023A-47R-5,0.0681.799682.570370-C0023A-47R-5,106.0682.680683.630Interpreted from X-CT and IWT trimmings.Same as biotrubated mudstone from 47R-2.2016-10-03T14:32:36
370-C0023A-47R-CC,0.0682.680683.630370-C0023A-47R-CC,38.5683.000684.150Bioturbated mudstone simiar to 47R-2.2016-10-03T14:40:40
370-C0023A-48R-1,0.0683.000683.000370-C0023A-48R-CC,42.0687.500687.690Heavily bioturbated mudstone and a thin calcareous mudstone. Similar to 46R except bioturbation is less and some green-bentonite volcanic ash beds survive.Slightly dipping bedding deduced from lamination.Sub-vertical healed faulting system observed in 48R-4,20 70cm. Quartz vein observed 48R-2,24-34cm.2016-10-28T17:38:58
370-C0023A-48R-1,0.0683.000683.000370-C0023A-48R-1,114.0684.940684.140Bioturbated mudrockMissing interval inferred from XCT image and adjacent intervals.2016-10-03T17:54:34
370-C0023A-48R-2,0.0684.940684.140370-C0023A-48R-2,144.0685.476685.580Bioturbated mudrock. Missing interval is inferred from adjacent intervals and the XCT image. 12 Green clay layer, tilted at a gentle angle129-130 Zoophycos burrow, tilted in the biscuit135-138 Planar bedding, 0.5 - 1 cm thick116-117 cm slightly dipping bedding deduced by lamination.34-35 cm quartz veins.2016-10-04T06:01:50
370-C0023A-48R-3,0.0685.476685.580370-C0023A-48R-3,81.0686.253686.390Mudrock with planar bedding. Bedding is usually horizontal except at 29.5-35 cm they are tilted at a gentle slope. But biscuits may have been rotated during drilling.29.5-31.5 A green clay layer which is tilted at a gentle angle16 cm horizontal bedding deduced by lamination.2016-10-04T06:02:56
370-C0023A-48R-4,0.0686.253686.390370-C0023A-48R-4,88.0687.970687.270Bioturbated interval1-30 Mudrock30-34 Calcareous mudrock34-88 Mudrock20-45 A sub-vertical black band on the drilling biscuits shows the biscuits are rotated during drilling19-80 cm sub-vartical healed fault system.2016-10-04T06:04:34
370-C0023A-48R-CC,0.0687.970687.270370-C0023A-48R-CC,42.0687.500687.690Bioturbated mudrock38.5-40 A dark, thin layer, tilted at a gentle angle19-21 cm slightly dipping bedding deduced by lamination.38-39 cm slightly dipping bedding deduced by lamination.2016-10-04T06:06:28
370-C0023A-49R-1,0.0687.500687.500370-C0023A-49R-CC,20.0691.415691.415Bioturbated mudstone and calcareous mudstone with intervals where bioturbation is reduced and green-bentonite ash laminae are preserved. Brecciated interval associated with faulting.Sub-vertical healed faulting observed in 49R-1, 36-47cm. A fracturezone showing reverse fault sense by slicken lines observed in 49R-3,45-63cm.2016-10-28T18:00:12
370-C0023A-49R-1,0.0687.500687.500370-C0023A-49R-1,9.0687.590687.590Inferred as mudrock from adjacent intervals2016-10-03T18:44:13
370-C0023A-49R-2,0.0687.590687.590370-C0023A-49R-2,123.5688.825688.825Bioturbated mudrockMissing intervals inferred from adjacent intervals and XCT images59-71 cm healed fault.85-86 cm slightly dipping bedding deduced by lamination.2016-10-04T06:10:20
370-C0023A-49R-3,0.0688.825688.825370-C0023A-49R-3,144.0690.265690.265Bioturbated mudrock53-59 Brecciated mudrock, which is potentially fault breccia. Same colour as the surrounding mudrock. Can see burrows in the breccia.45-63 cm fracture zone with slicken line.54.5-56.5 cm reverse fault within a fracture zone.2016-10-04T06:13:22
370-C0023A-49R-4,0.0690.265690.265370-C0023A-49R-4,95.0691.215691.215Bioturbated mudrock48, 49, 65 Thin layers of black clay35-54, 56 pyrite nodules (2 cm long and 0.5 cm long)2016-10-03T18:58:16
370-C0023A-49R-CC,0.0691.215691.215370-C0023A-49R-CC,20.0691.415691.415Bioturbated mudrockMissing interval inferred from adjacent intervals12 A thin, dark layer2016-10-03T19:00:13
370-C0023A-50R-1,0.0692.500692.500370-C0023A-50R-CC,30.5697.500697.975Heavily bioturbated mudstone and calcareous mudstones. Burrows contain high silt content that includes calcite and bioclasts. In places green bentonite ash laminae survive, but in most places bioturbation disrupts lamination. Similar to 45R and 46R.2016-10-28T18:04:37
370-C0023A-50R-1,0.0692.500692.500370-C0023A-50R-1,93.0693.349693.430Bioturbated mudrock33-34 A zoophycos38-40 A large burrow (2 cm), apparently going into or out of paperMissing intervals inferred from adjacent intervals and XCT images.2016-10-03T22:01:36
370-C0023A-50R-2,0.0693.349693.430370-C0023A-50R-2,56.5693.865693.995Inferred as bioturbated mudrock from adjacent intervals and XCT images2016-10-03T22:02:33
370-C0023A-50R-3,0.0693.865693.995370-C0023A-50R-3,133.0695.800695.325Bioturbated mudrock32.5, 33.5, 37, 40 Dark, thin layers119-121 A vertical burrowMissing intervals inferred from adjacent intervals and XCT images2016-10-03T22:05:55
370-C0023A-50R-4,0.0695.800695.325370-C0023A-50R-4,78.5695.797696.1101-23 Bioturbated calcareous mudrock23-78.5 Bioturbated mudrock2016-10-03T22:08:42
370-C0023A-50R-5,0.0695.797696.110370-C0023A-50R-5,92.0696.637697.300Bioturbated mudrock and calcareous mudrock. Missing interval inferred from adjacent intervals and XCT images. Where the transition between mudrock and calcareous mudrock occurs in the missing interval is not known.55.5-56 A pyrite nodule (0.7 cm)2016-10-03T22:12:47
370-C0023A-50R-6,0.0696.637697.300370-C0023A-50R-6,64.0697.222697.670Bioturbated calcareous mudrock and mudrock2016-10-03T22:16:29
370-C0023A-51R-1,0.0697.500697.500370-C0023A-51R-CC,16.0702.290702.290Heavily bioturbated mudstone and thin calcareous mudstones. Burrows contain high silt content that includes calcite and bioclasts. Muddy areas contain less silt and bioclasts and more clay, vitric volcanic ash and pelagic grains(calcitic and siliceous nano fossils). In places green bentonite ash laminae survive but they are disrupted by drilling.2016-10-31T08:31:54
370-C0023A-51R-1,0.0697.500697.500370-C0023A-51R-1,126.0698.760698.760Bioturbated mudrock consists of homogenized clay. But slightly paler than the usual homogenized clay, with 5-7% vitric glass.48-53 Black homogenized mudrock. Pyrite is common82-87 Greenish green band, with flame structures on top.Possibly from alteration.The band has greenish grey parts and dark green parts:Greenish grey: consists of dominantly homogenized clay (dominant component of the Lower Shikoku Basin), commonly pyrite, and few quartzDark grey: dominantly homogenized clay, few pyrite but commonly larger-grain (can be 150 um) quartz2016-10-04T04:39:06
370-C0023A-51R-2,0.0698.760698.760370-C0023A-51R-2,128.0700.400700.400Bioturbated mudrockMissing intervals inferred from XCT images and adjacent intervals2016-10-04T01:42:46
370-C0023A-51R-3,0.0700.400700.400370-C0023A-51R-3,146.5701.505701.505Bioturbated mudrock2016-10-04T01:44:51
370-C0023A-51R-4,0.0701.505701.505370-C0023A-51R-4,62.5702.130702.130Missing intervals inferred from XCT images and adjacent intervals60.5-63 There is a green area on one of the drilling breccia. It consists of clay and clay aggregates which are more rounded than those in the surrounding mud rock.Few pyrite and rare vitric glass. Looks like an alteration band2016-10-04T04:39:43
370-C0023A-51R-CC,0.0702.130702.130370-C0023A-51R-CC,16.0702.290702.290Mudrock. Missing intervals inferred from adjacent intervals and XCT images.3-4 Green colour mudrock, compositions resembling that at the bottom of section 42016-10-04T04:17:56
370-C0023A-52R-1,0.0702.500702.500370-C0023A-52R-2,133.0705.160705.160Heavily bioturbated mudstone. Burrows contain high silt content that includes calcite and bioclasts. Similar to 51R.2016-10-31T07:31:08
370-C0023A-52R-1,0.0702.500702.500370-C0023A-52R-1,133.0703.830703.830Inferred as bioturbated mudrock from adjacent intervals and XCT images.2016-10-04T04:28:46
370-C0023A-52R-2,0.0703.830703.830370-C0023A-52R-2,133.0705.160705.160Bioturbated mudrockMissing intervals inferred from adjacent intervals and XCT images.2016-10-04T05:21:33
370-C0023A-53R-1,0.0707.500707.500370-C0023A-53R-CC,27.5708.245708.245Core not seen: Heavily bioturbated mudstone and calcareous mudstones. Based on X-CT and residues.2016-10-31T07:19:27
370-C0023A-53R-1,0.0707.500707.500370-C0023A-53R-1,47.0707.970707.970Bioturbatred mudrock.Infered from overlying unit ans X-CTNo sample available.2016-10-06T13:57:52
370-C0023A-53R-CC,0.0707.970707.970370-C0023A-53R-CC,27.5708.245708.245No sample seen, but based on change in X-CT value at 12 cm could be a concreation or pyritised vein as seen in2016-10-06T14:01:14
370-C0023A-54R-1,0.0712.500712.500370-C0023A-54R-CC,25.5714.420714.420Heavily bioturbated calcareous mudstones. Burrows contain high silt content that includes calcite and bioclasts. Similar to 51R. Based on sample residue and core catcher observation.2016-10-31T07:30:27
370-C0023A-54R-CC,0.0714.165714.165370-C0023A-54R-CC,25.5714.420714.4201-8 Calcareous mudrock:Consists of small carbonate grains, clay aggreates that resemble the Upper Shikoku Basin, few pyrite, rare vitric glass8-19 Brecciated mudrock19-25.5Calcareous mudrock:Abundant nonnofossils e.g. forams, common smaller carbonate grains; clay aggregates resemble the Upper Shikoku Basin mudrock. Saw a discoaster in the smear slide. SEM finds minor amount of barite.2016-10-27T02:29:14
370-C0023A-55R-1,0.0717.500717.500370-C0023A-55R-CC,28.0722.100722.100Heavily bioturbated mudstone. Burrows contain high silt content that includes calcite and bioclasts. Similar to 51R.Healed reverse fault 55R-2, 73-82 cm.2016-10-31T08:33:11
370-C0023A-55R-1,0.0717.500717.500370-C0023A-55R-1,131.0718.810718.810Missing intervals inferred from adjacent intervals and XCT image0-12 Drilling fill at core top. Rounded. May not be at the right position. The topmost piece is calcareous.9-12 Vertical dark band (2 mm wide) and green band (5 mm wide) on the fill piece.The dark band looks pyritized while the green band resembles those in core 51R. Do not observe these bands above 9 cm or 12 cm. This piece probably fell from above.12-22 Mudrock, bioturbated. Composition resembles the mudrock before core 39.2016-10-06T00:43:51
370-C0023A-55R-2,0.0718.810718.810370-C0023A-55R-2,139.0720.200720.200Missing intervals inferred from XCT images and adjacent intervals.Mudrock, heavily bioturbated, with a 2-cm long pyrite nodule59-60 cm horizontal bedding deduced by lamination.73-83 cm healed reverse fault which is unclear 3D attitude.2016-10-06T12:23:03
370-C0023A-55R-3,0.0720.200720.200370-C0023A-55R-3,138.5721.585721.585Missing intervals inferred from XCT images and adjacent intervals.Bioturbated mudrock69 pyrite nodule (5 mm)130.5 and 132.5 are 2 thin green layers next to burrows. Possibly formed because of bioturbation2016-10-06T00:57:19
370-C0023A-55R-4,0.0721.585721.585370-C0023A-55R-4,23.5721.820721.820Inferred as bioturbated mudrock from adjacent cores and XCT images.2016-10-06T00:58:26
370-C0023A-55R-CC,0.0721.820721.820370-C0023A-55R-CC,28.0722.100722.100Inferred as bioturbated mudrock from adjacent intervals and HIWR sample residue.2016-10-06T01:03:07
370-C0023A-56R-1,0.0722.500722.500370-C0023A-56R-CC,32.5727.500728.345Heavily bioturbated mudstone. Burrows contain high silt content that includes calcite and bioclasts. Similar to 51R. Sandy pyrite vein present , similar to 61R-2. Vein is split between 56R-4 and 56R-5 and is chloritised at margins.Several reverse faulting with slicken lines (56R-5, 7-15cm).2016-10-31T08:34:38
370-C0023A-56R-1,0.0722.500722.500370-C0023A-56R-1,151.0723.792724.100Bioturbated mudstone with low silt content . Silt fraction includes authigenic micas (illite) and sub angular quartz.No carbonate and minor pyrite.123-133 cm two revese faulting with slicken lines observed. One of them healed with 2 mm displacement.2016-10-06T12:31:36
370-C0023A-56R-2,0.0723.792724.100370-C0023A-56R-2,88.5724.549724.895interpreted from X-CT.Bioturbated mudstone with pyrite mineralisation2016-10-06T11:02:53
370-C0023A-56R-3,0.0724.549724.895370-C0023A-56R-3,137.0725.721726.26529-33 cm reverse faulting with slicken lines observed.2016-10-06T12:31:51
370-C0023A-56R-4,0.0725.721726.265370-C0023A-56R-4,74.5726.358727.100Bioturbated mudstone.Increasingly calcitic towards base (most of the calcite is concentrated in burrows)73.5 -74.5 Stockwork of pyrite (metal suphide - awaiting confirmation) within mudrock. Walls of vein are brecciated.Photomicrographs and SEM sample2016-10-06T10:46:16
370-C0023A-56R-5,0.0726.358727.100370-C0023A-56R-5,101.0727.222728.2000-2.5 Stockwork of pyrite (metal suphide - awaiting confirmation) within mudrock. Walls of vein are brecciated.Bioturbatde mudstone7-11 cm, two reverse faulting with slicken lines observed.2016-10-06T12:32:04
370-C0023A-57R-1,0.0727.500727.500370-C0023A-57R-CC,40.5731.200731.200Bioturbated mudstone and calcareous mudstone with intervals where bioturbation is reduced and green-bentonite ash laminae are preserved.2016-10-31T08:25:10
370-C0023A-57R-1,0.0727.500727.500370-C0023A-57R-1,140.5728.905728.905Drill Breccia comprising clasts of biotrubated mudstones.Top of section has calcite and carbonate concretions.2016-10-06T12:04:15
370-C0023A-57R-2,0.0728.905728.905370-C0023A-57R-2,142.0730.325730.325Calcareous Bioturbated Mudstone.Silt fraction contains authigenic illite, pyrite and partially devitrified volcanic glass.Quartz grains are not abundant but are subangular..2016-10-06T12:47:45
370-C0023A-57R-3,0.0730.325730.325370-C0023A-57R-3,47.0730.795730.795Calcareous and bioturbated mudstones same 57R-1 and 57R-222-25 cm dipping bedding deduced by lamination.25 cm horizontal bedding deduced by lamination.2016-10-07T05:02:55
370-C0023A-57R-CC,0.0730.795730.795370-C0023A-57R-CC,40.5731.200731.200Bioturbated mudstoneSection heavily disrupted by drilling and extrusion from core has caused drilling mud to be compacted into drilling-brecciated mudstone.2016-10-06T12:59:48
370-C0023A-58R-1,0.0732.500732.500370-C0023A-58R-CC,6.0735.430735.430Heavily bioturbated mudstone and thin calcareous mudstones. Burrows contain high silt content and muddy areas contain less silt and bioclasts and more clay, vitric volcanic ash and pelagic grains (calcitic and siliceous nano fossils). Similar to 51R.2016-10-31T08:39:21
370-C0023A-58R-1,0.0732.500732.500370-C0023A-58R-1,69.5733.195733.195Bioturbated mudstoneBurrows help pickout lamination. Lithology similar to 58R-2.41.5-42 cm slightly dipping bedding deduced by lamination.2016-10-06T13:30:40
370-C0023A-58R-2,0.0733.195733.195370-C0023A-58R-2,112.0734.315734.315Calcareous bioturbated mudstone.Contact with overlying lithology not seen.Concreation at 58 to 66 cm seen as bright spot on X-CT and is heavily indurated compared to units above and below.40-41 and 60-61 cm, slightly dipping bedding planededuced by lamination.2016-10-06T13:38:32
370-C0023A-58R-3,0.0734.315734.315370-C0023A-58R-3,105.5735.370735.370Calcareous bioturbated mudstone same as 58R-2Interpreted fromX-CT2016-10-06T13:45:51
370-C0023A-59R-1,0.0737.500737.500370-C0023A-59R-CC,45.0742.500742.745Heavily bioturbated mudstone and calcareous mudstone. Carbonate and pyrite replacment is notable in burrows. Similar to Core 51R.Healed fault observed 59R-3, 108-109cm2016-10-31T08:37:04
370-C0023A-59R-1,0.0737.500737.500370-C0023A-59R-1,77.5738.239738.275Mudrock, composition resembles the mudrock before core 39. Consists of dominantly clay, commonly calcite, nannofossils and vitirc glass17-21 Mudrock similar to its adjacent intervals, but appear slightly darker, and with larger quartz crystals in it.Bounded to 2 thin layers above. The on on top is green in colour, while the one at the bottom is darker. The boundaries are tilted at a gentle angle. There is bioturbation at the boundaries and inside this darker mudrock interval.2016-10-06T23:16:58
370-C0023A-59R-2,0.0738.239738.275370-C0023A-59R-2,110.5739.292739.380Missing interval inferred from XCT images and adjacent intervals.Mudrock101.5-108 Seemingly a vertebrate fossil. The skeletal part is filled with paler materials, and edges are more green in colour.108-109 cm healed fault observed.2016-10-07T05:04:33
370-C0023A-59R-3,0.0739.292739.380370-C0023A-59R-3,60.0739.864739.980Missing interval inferred from XCT images and adjacent intervals.Bioturbated mudrockPyrite nodules at 2 cm (1 cm big) and at 47.5-48.5 cm (4 cm big).2016-10-06T23:24:25
370-C0023A-59R-4,0.0739.864739.980370-C0023A-59R-4,141.5741.213741.395Mudrock, bioturbatedMissing interval inferred from XCT images and adjacent intervals32 Pyrite nodule (2 cm large) 53-60 Appear paler in the XCT image due to heavy bioturbation.Higher carbonate content in this interval69 Horizontal burrow with purple-coloured edges2016-10-06T23:30:09
370-C0023A-59R-5,0.0741.213741.395370-C0023A-59R-5,90.0742.710742.295Bioturbated mudrockMissing intervals inferred from adjacent intervals and XCT images2016-10-06T23:30:55
370-C0023A-59R-CC,0.0742.710742.295370-C0023A-59R-CC,45.0742.500742.745Bioturbated mudrock36.5 pyrite nodule (0.3 cm in size)36-43 Calcareous mudrock. Appear paler in colour than the surrounding mudrock with the higher yellowish carbonate content.Most carbonate is likely burrow fill instead of being in the original composition of the matrix2016-10-06T23:35:03
370-C0023A-60R-1,0.0742.500742.500370-C0023A-60R-CC,25.0746.300746.300Heavily bioturbated mudstone. Mudstone contains a small amount of silt and fine sand; angular quartz, slightly devirtifed volcanic glass, minor microcystalne calcite. Burrows contain shelly bioclasts. Patches of green vritric volcanic ash are often wispy and cut by burrows. Similar to Core 51R.2016-11-04T06:57:52
370-C0023A-60R-1,0.0742.500742.500370-C0023A-60R-1,119.0743.690743.690Inferred as bioturbated mudrock from adjacent intervals and XCT images2016-10-06T23:38:33
370-C0023A-60R-2,0.0743.690743.690370-C0023A-60R-2,93.0744.620744.620Inferred as bioturbated mudrock from adjacent intervals and XCT images2016-10-06T23:38:49
370-C0023A-60R-3,0.0744.620744.620370-C0023A-60R-3,116.0745.780745.780Bioturbated mudrock. Abundant carbonate in burrows.92-108 Moderately brecciated by drillingMissing interval inferred from adjacent intervals and XCT images2016-10-06T23:41:46
370-C0023A-60R-CC,0.0745.780745.780370-C0023A-60R-CC,25.0746.300746.300Bioturbated mudrockMissing intervals inferred from adjacent intervals and from XCT imagesAt 14-16 cm, the top left hand side is a calcareous, detached, about 2cm x 2cm fragment. May be fallen from above2016-10-06T23:44:34
370-C0023A-61R-1,0.0747.500747.500370-C0023A-61R-CC,18.5752.350752.350Bioturbated mudstones, calcareous mudstones and intraformational breccias (a breccia comprising clasts of stratigraphically adjacent mudrock). The intraformational breccia. comprises a mud matrix with larger clasts of burrows(silt-filled bioclast-rich). This breccia is similar to 44R-6 rather than the fault damage zones described later.Several reverse fault with slicken lines observed 61R-2,53-122 cm and change in bedding between 61R-2 and 61R-3.Healed faults observed 61R-3,69-103 cm.Bedding parallel seam of poorly consolidated silt, sand and pyrite a muddy matrix ( 61R-2,117-119cm), similar to 56R and later observations including 63R and 71R.2016-11-04T05:17:17
370-C0023A-61R-1,0.0747.500747.500370-C0023A-61R-1,83.5748.335748.335Bioturnated mudrock and calcareous mudrock similar to 60R-3.Drilling disturbance at base has picked out hardened layers.2016-10-07T12:21:19
370-C0023A-61R-2,0.0748.335748.335370-C0023A-61R-2,147.0749.805749.8050-113cm bioturbated mudstone similar to that seen in 60R-3. Silt and fine sand content includes angular quartz, slightly devirtifed volcanic glass - minor microcystalne calcite. Some illite flakes and pyrite.113-117. Intraformational breccia. ground mass is mud and clasts are silt filled calcitic burrows. See 44R-6 for similar lithology.117-119 Bedding parallel seam of poorly consolidated silt and sand in a muddy matrix that has microcyrstaline calcite and nanofossils (matrix about 15 %).119-148 cm Bioturbated calcareous mudstone.53-122 cm several reverse fault with slicken lines observed. 119-120 cm slightly dipping bedding infered from between sandstone and underlying mudstone.2016-10-07T12:59:57
370-C0023A-61R-3,0.0749.805749.805370-C0023A-61R-3,134.0751.145751.14569-70 and 103-104 cm healed faults observed.2016-10-07T05:06:35
370-C0023A-61R-4,0.0751.145751.145370-C0023A-61R-4,102.0752.165752.165Bioturbated mudstone interpreted to be the same as 61R-2.2016-10-07T13:22:47
370-C0023A-61R-CC,0.0752.165752.165370-C0023A-61R-CC,18.5752.350752.350Bioturbated mudstone same as 61R-2. Interpreted from WR residue.2016-10-07T13:24:59
370-C0023A-62R-1,0.0752.500752.500370-C0023A-62R-CC,26.0755.435755.435Bioturbated mudstones and calcareous mudstones Bioturbated Calcareous mudstones similar to 60R.Normal and reverse faults with slicken lines observed 62R-2, 92cm to 62R-3, 7cm and bedding dips slightly.2016-11-04T05:22:20
370-C0023A-62R-1,0.0752.500752.500370-C0023A-62R-1,68.0753.180753.180Interpreted from X-CT, trimmings and underlying sections.Bioturbated Calcareous mudstone2016-10-07T07:51:40
370-C0023A-62R-2,0.0753.180753.180370-C0023A-62R-2,139.0754.570754.570Bioturbated calcareous mudstone.Low silt content but high content of microcrystaline carbonate cement.Volcanic glass evident by angular silt sized clasts that are extinct in XPL.92-94 cm normal faulting with slicken lines observed.104-111 cm reverse faulting with slicken lines observed.113-115 cm dipping bedding deduced by lamination.2016-10-07T07:16:40
370-C0023A-62R-3,0.0754.570754.570370-C0023A-62R-3,60.5755.175755.175Bioturbated mudstone and calcareous mudstoneSame as 62R-2.Many burrows are narrow elipses that appear to be stretched parallel to bedding plane.4-7 cm normal faulting with slicken lines observed.22 cm slightly dipping beddign deduced by lamination.2016-10-07T06:09:39
370-C0023A-62R-CC,0.0755.175755.175370-C0023A-62R-CC,26.0755.435755.435Drill breccia made from clasts of clay rich Mudrock - slightly bioturbated. Calcareous. Found 0.5 cm drill bit inside (inferred from the residue of 370HIWR sample)2016-10-07T18:05:30
370-C0023A-63R-1,0.0757.500757.500370-C0023A-63R-CC,20.0760.550760.550Bioturbated mudstones, bioturbated calcareous mudstones (similar to 60R) cm and unconsolidated and clast-supported intraformational breccia comprising clasts of mudstone. Clasts range in size from coarse sand to clasts > 3 cm width, but clasts sizevaries to create intervals of a single predominant size range. Clasts have a jigsaw-fit and are imbricated along their long axis.Breccia between 63R-1,64 to 63R-2 108 fault damage zone.Bedding parallel seam of sand and pyrite mineralisation similar to 56R and 61R-2. Some green smecite mineralisation 63R-2, 45- 48 cm., but alteration limited.2016-11-04T05:52:06
370-C0023A-63R-1,0.0757.500757.500370-C0023A-63R-1,89.5758.395758.3950-22 cm drill breccia comprising calsts of bioturbated mudstone. Lithology similar to 62R-222-30 cm Bioturbated Mudstone with burrows that give a sense of dip.30-64 Bioturbated calcareous mudstone.46-64 cm Bioturbated Mudstone same as 22-30 cm.64 -70 cm Uncondolidated Intraformational clast supported Breccia comprising clasts of mudstone that range in size from coarse sand to clasts 3 cm diameter.Carbonate is common within clasts the sand between clasts.70-89 cm Intraformational Breccia comprising clasts of mudstone mostly 6- 9 cm across.64-89 cm damage zone with intraformational clast less than 10 cm.Reverse faulting with slicken lines observed above and in the damage zone. Above the damage zone, bedding is slightly dipping.2016-10-08T03:37:12
370-C0023A-63R-2,0.0758.395758.395370-C0023A-63R-2,146.0759.855759.8550-108 cm damage zone with intraformational clasts less than 10cm.Intensly pyritised zone at 105 to 107 cm.Chloritisation from 43 to 47 cm.Reverse faulting with slicken lines observed in the damage zone.Below the damage zone, bedding is horizontal.2016-10-10T04:43:38
370-C0023A-63R-CC,0.0759.855759.855370-C0023A-63R-CC,20.0760.550760.550Bioturbated mudstone same as base of 63R-2.2016-10-07T11:41:57
370-C0023A-64R-1,0.0762.500762.500370-C0023A-64R-CC,32.0764.240764.240Heavily bioturbated mudstone similar to 60R.Reverse faulting with slicken lines observed 64R-2, 78-105 cm and in 64R-CC.Slight dip in bedding deduced from lamination.2016-11-04T06:58:36
370-C0023A-64R-1,0.0762.500762.500370-C0023A-64R-1,142.0763.920763.920Bioturbated mudrock78-105 cm reverse faulting with slicken lines observed.130-132 cm slightly bedding deduced by lamination.2016-10-08T03:45:23
370-C0023A-64R-CC,0.0763.920763.920370-C0023A-64R-CC,32.0764.240764.240Bioturbated mudrock22-31 cm reverse faulting with slicken lines observed.2016-10-08T03:46:32
370-C0023A-65R-1,0.0766.500766.500370-C0023A-65R-CC,12.5769.440769.440Bioturbated mudstones, bioturbated calcareous mudstones (similar to 60R) cm and unconsolidated, intraformational breccia with imbricated jigsaw-fit clasts of mudstone (similar to 63R).Fracture zone coincides with fault breccia 65R-1, 65-75 cm and reverse faults with slicken lines.65R-1, 57-58 cm.2016-11-04T06:07:02
370-C0023A-65R-1,0.0766.500766.500370-C0023A-65R-1,83.5767.335767.33544.5-59.5 Calcareous mudrock59.5-83 Mudrock56.5-62 Angular breccia (1-2 cm long)62-65 Angular breccia (1-3 cm long)65-75 cm fracture zone with intraformational clasts of 1-3 cm in length.It shows reverse faulting with slicken lines.57-58 cm reverse faulting with slicken lines.Missing interval inferred from adjacent intervals and XCT images2016-10-08T03:53:23
370-C0023A-65R-2,0.0767.335767.335370-C0023A-65R-2,127.5768.610768.610Fractured mudrock1-37 Each fractured piece is 4 to >10 cm long.33.5-34 Left side of the fault is a pyrite-rich green clay layer.67-100 Each fractured piece is 3 to >10 cm long. Abundant carbonate-rich burrows2016-10-07T22:39:57
370-C0023A-65R-3,0.0768.610768.610370-C0023A-65R-3,70.5769.315769.315Inferred as bioturbated mudrock from XCT images and adjacent intervals2016-10-07T22:46:42
370-C0023A-65R-CC,0.0769.315769.315370-C0023A-65R-CC,12.5769.440769.440Inferred as bioturbated mudrock from adjacent intervals, XCT images and the residues of 370HIWR samples2016-10-07T22:49:30
370-C0023A-66R-1,0.0771.500771.500370-C0023A-66R-CC,16.0775.000775.305Heavily bioturbated shelly mudstone similar to 60R except for shell-content. Most of the shell content is within burrows.Healed fault observed at 66R-4,17-32cmPyrite and sand seam at 66R-1,117.5-124.5 cm has morphology of burrow fill.Compare to similar veins core 56R and also 63R-2, 106-108 cm, 67R-3, 81-82 cm, 67R-CC, 5-8 cm.2016-11-04T06:15:18
370-C0023A-66R-1,0.0771.500771.500370-C0023A-66R-1,75.5772.195772.255Inferred as mudrock with adjacent intervals2016-10-08T02:03:14
370-C0023A-66R-2,0.0772.195772.255370-C0023A-66R-2,124.5773.340773.500Missing interval inferred from XCT images and adjacent intervalsBioturbated mudrock121.5-122 A dark band, slightly tilted. Consists of dominantly pyrite, common in some red grainsSand size particles of pyrite follw bed-orientated fabric, but pinches out.Close up photo compare to vein at 63R-2, 106-108 cm, 67R-3, 81-82 cm, 67R-CC, 5-8 cm.Close up picture and micrograph available.122-123 A green band: dominantly clay which resembles that in the black homogenized mudrock in previous cores.Few vitric glass. Very large and angular quartz grains. Did not observe nannofossils in the smear slide. SEM finds mostly smectite with some illite.2016-10-27T02:28:12
370-C0023A-66R-3,0.0773.340773.500370-C0023A-66R-3,115.5774.402774.655Bioturbated mudrockMissing interval inferred from adjacent intervals and XCT images95-103 A vertical burrow, 3 cm long, appear dark and is probably filled with pyrite2016-10-08T02:16:28
370-C0023A-66R-4,0.0774.402774.655370-C0023A-66R-4,49.0774.853775.145Bioturbated mudrock17-32 cm healed fault observed.2016-10-08T12:20:05
370-C0023A-66R-CC,0.0774.853775.145370-C0023A-66R-CC,16.0775.000775.305Inferred as bioturbated mudrock from adjacent intervals and XCT imagesWith a disseminated pyrite vein (seen in the residue of 370HIWR sample)2016-10-08T02:36:08
370-C0023A-67R-1,0.0775.000775.000370-C0023A-67R-CC,18.0778.595778.595Bioturbated mudstones and calcareous bioturbated mudstones with some green-ash layers preserved.Bedding is generally horizontal except for the lower part of 67R-3 which dips slightly and in which burrows look elongated and strained. Fracture networkwith reverse faults and slicken lines 67R-3, 64-68 cm.Anhydrite/Baryte vein at 67R-2,31cm and tigmatic clay-vein filled with red silt (low pyrite content). 67R-3 81cm.2016-11-04T06:51:46
370-C0023A-67R-1,0.0775.000775.000370-C0023A-67R-1,121.0776.210776.210Bioturbated calcareous mdustone. Interpreted from X-CT and COMGAS sample from top of 67R-2, 0-8cm.2016-10-08T11:55:13
370-C0023A-67R-3,0.0777.570777.570370-C0023A-67R-3,84.5778.415778.415Top section infered from X-CT and overlying section.0-40cm Calcareous mdustone same as 67R-2. From X-CT pyritised burrows give impression that bedding is horizontal.40-84.5 cm Pyritic bioturbated mudstone with sheared and deformed burrows.Sedimentary fabric given the impression that bedding is inclined.78 and 82 cm veins filled wih red siltu-clay fill. Not pyritic.64-68 cm fracture network showing reverse faulting with slicken lines.2016-10-08T12:24:53
370-C0023A-67R-CC,0.0778.415778.415370-C0023A-67R-CC,18.0778.595778.595Described from HIWR. Bioturbated pyritised mudstone same as base of 67R-32016-10-08T11:46:56
370-C0023A-68R-1,0.0780.000780.000370-C0023A-68R-CC,15.0781.450781.450Heavily bioturbated mudstone (similar to 41 to 45 R) where there is a distinction between burrow content and mudrock. Burrow fill includes silt- and sand-sized bioclasts, ash and volcaniclasts (often detrital igneous crystals).Burrowing disrupts other burrows and ash layers.Bedding is generally horizontal.2016-11-04T06:37:26
370-C0023A-68R-1,0.0780.000780.000370-C0023A-68R-1,130.0781.300781.300Heavily bioturbated mudstone. Very similar to 41 to 45 R.Some ash and volcaniclasts. Burrowing disrupts other burrows and ash layers.Low silt content that includes hevaily devitrified glass and angular grains of quartz.Low calcite content in 68R-1 and 68R-CC.4.5 cm horizontal bedding infered from lamination.8-48 Smear slide from IWT sample: abundant clay, biotitie pyrite. Common glass, volcanic grains, carbonate2016-10-09T00:15:25
370-C0023A-68R-CC,0.0781.300781.300370-C0023A-68R-CC,15.0781.450781.450Infered from X-CT and 370HIWR residue.Heavily bioturbated mudstone. Very similar to 41 to 45 R. and 68R-1.Low silt content that includes hevaily devitrified glass and angular grains of quartz.2016-10-08T08:01:58
370-C0023A-69R-1,0.0785.000785.000370-C0023A-69R-CC,15.0787.240787.240Bioturbated mudstone and calcareous bioturbated mudstone. Preservation of some green-bentonite ash layers. Note abrupt colour change from calcareous mudstone to mudstone on 69R-2.Bedding is horizontal.2016-11-04T06:28:57
370-C0023A-69R-1,0.0785.000785.000370-C0023A-69R-1,101.0786.100786.100Buiturbated calcareous Mudstone, structures are undeformed and give a sense of horizontal bedding2016-10-08T12:51:16
370-C0023A-69R-2,0.0786.100786.100370-C0023A-69R-2,108.0787.900787.900Bioturbated calcareous mudstone and bioturbated mudstones.burrows are undistotred. Bedforms and ichnofacies indicate horizontal bedding.88-89 cm horizontal beddig deduced by lamination.2016-10-08T14:05:42
370-C0023A-69R-CC,0.0787.900787.900370-C0023A-69R-CC,15.0787.240787.240Based on 370 HIWR residue and core catcher observations.Bioturbated mudstones - not calcareous.2016-10-08T12:55:50
370-C0023A-70R-1,0.0790.000790.000370-C0023A-70R-CC,6.0790.285790.285Bioturbated mudstone with burrows similar to 60R.Ichnofacies and green-volcanic ash laminae suggest bedding horizontal.2016-11-04T07:01:39
370-C0023A-70R-1,0.0790.000790.000370-C0023A-70R-1,22.5790.225790.225Bioturbated mudstone with burrows.ichnofacies and laminae suggest horizontal bedding.Same lithology as 69R-CC.2016-10-08T16:24:24
370-C0023A-70R-CC,0.0790.225790.225370-C0023A-70R-CC,6.0790.285790.285Bioturbated mudstone, infered from XRD, catwalk observation and 370HIWR residue.2016-10-08T16:34:37
370-C0023A-71R-1,0.0793.000793.000370-C0023A-71R-CC,15.5796.550796.550Heavily brecciated interval of bioturbated mudstone with zones of pervasive clay alteration. The mudstone is similar to that seen in cores 43R-69R, and contains two lithological elements; intervals of silty burrow-fill and host mudrock.In this interval calcite cementation is pervasive. Many breccia horizons are present and chloritisation and the formation of green smectite is common within these intervals. The clast size of breccia fragments varies from a few mm to 10's of mm.The surface of individual clasts is slick, and breccia-clasts have an imbricated jigsaw-like fit in X-CT images prior to core splitting.A fracture network with a shear fabric is present 71R-2, 88-107cm.2016-11-09T02:05:12
370-C0023A-71R-1,0.0793.000793.000370-C0023A-71R-1,89.0793.890793.8900-12 Calcareous mudrock12-18, 73.5-89 Mudrock12-18, 79-80 Intervals with many horizontal burrows. Dark in colour, rich in pyrite. cm-long.79-79.5 A nodule or burrow filled with carbonateThe whole section is heavily bioturbated.Missing intervals inferred from XCT images and adjacent intervals.2016-10-08T23:59:01
370-C0023A-71R-2,0.0793.890793.890370-C0023A-71R-2,142.5795.315795.3150-8 Calcareous mudrock18-45 Mudrock:8-18 Mudrock breccia, angular, 2-5 cm. Some breccia is dark green in colour24-45 High burrow density.Burrows are dark in colour, rich in pyriteChange in apparent inclination of bedding and sedimentary fabrics at 31.5 cm . Above apparent dip is inclined, beneath burrow-fabric is horizontal but evidences shearing.31.2-31.5 is a dark band (QUESTION - IS THIS SHEAR ZONE)?45-57 Calcareous mudrock:50 a horizontal burrow50-51 a vertical burrow57-84 Mudrock:60-62 Mudrock breccia, angular, 0.5-1 cm62-80 High burrow density.Burrows are dark in colour, rich in pyrite80-84 Mudrock breccia, 0.5-1cm, angular84-90 Calcareous mudrock90-97 Mudrock breccia, angular, 0.2 - 1.5cm. One of the breccia is dark green in colour 97-119 Calcareous mudrock: 98.5-101 A tilted dark green vein103.5-111 Calcareous mudrock breccia, angular, 0.5-1.5 cm, some pieces at the left hand side is dark green119-123 Purple, silty layer. Dark purple at the top and fades downwards. The base is sharp.Consists of dominantly homogenized clay, commonly pyrite, angular quartz, few vitirc glass and chlorite.Compare to pyritised veins and sand layers at 63R-2, 106-108 cm, 67R-3, 81-82 cm, 67R-CC, 5-8 cm.123-123.5A green clayey layer, not as dark as the other layers/breccia described above. Looks more like a continuous layer instead of a vein. Consists of dominantly clay (resembling that before core 40R), commonly glass and angular quartz grains120-123.5 A vertical burrow, rich in carbonate, yellowish grey in colour123.5-142.5 Calcareous mudrock32 cm horizontal bedding infered by lamination.121-122 cm slightly dipping bedding infered from between black sandstone and underlying mudstone.88-107 cm fracture zone consisting of 3-10 cm intraformational clast.2016-10-09T09:26:44
370-C0023A-71R-3,0.0795.315795.315370-C0023A-71R-3,108.0796.395796.395Missing interval inferred from adjacent intervals and XCT images18.5-36 Bioturbated mudrock with breciated zone from 22 to 29 cm84-108 Calcareous mudrock, bioturbated.Consists of dominantly clay (resembling that before core 40R), abundantly nannofossils (e.g. discoasters, foraminifera), commonly glass and carbonate, few chlorite. 91-94 Angular breccia, 0.2-0.5 cm 94-97.5 Angular breccia, 0.7-1 cm 97.5-105Angular breccia, 1-1.5 cm, largely align horizontally105-108: Sub-angular breccia, 1.5-2 cm93.5-104 Part of the breccia is dark green in colour.The mudrock here consists of clay (resembling the homogenized clay from core 41R to 45R) and few vitirc glassThe brecciated interval is infiltrated by drilling mud which is a mixture of materials we observed above.Dominantly fine in size. Clay dominates and glass is common2016-10-09T07:59:40
370-C0023A-71R-CC,0.0796.395796.395370-C0023A-71R-CC,15.5796.550796.550Bioturbated mudrock2016-10-09T03:14:16
370-C0023A-72R-1,0.0798.000798.000370-C0023A-72R-CC,21.0799.885799.885Bioturbated mudstone. Preservation of some green-bentonite ash layers. Similar to 68R and 69R but with less calcite cementationBedding is slightly inclined.2016-11-09T02:08:08
370-C0023A-72R-1,0.0798.000798.000370-C0023A-72R-1,71.5798.715798.715Pyritic bioturbated mudrock described from fragments in residues, and with reference to 72R-2 and 72 R-CC.2016-10-09T11:49:51
370-C0023A-72R-2,0.0798.715798.715370-C0023A-72R-2,96.0799.675799.675Bioturbated mudstoneCarbonate cemenetatio in burrows only.Ichnofabrics indiate inclined bedding - some deformation.Green colouration along lamiane at 79 and 60 cm.2016-11-09T02:06:16
370-C0023A-72R-CC,0.0799.675799.675370-C0023A-72R-CC,21.0799.885799.8850-3 drill mud containg small clasts of mudrock many of which are similar to the chloritised zone 71R-3- 99-100 cm. Photomicrograph available.3-21 cm Bioturbated Mudstone. Contains angular to sub-angular silt-sized quartz.Inchnofacies bedforms suggest horizontal bedding.2016-10-09T10:56:26
370-C0023A-73R-CC,0.0804.000804.000370-C0023A-73R-CC,19.5804.195804.195Three clasts of calcareous mudrock similar to previous calcareous mudrock in 71R.2016-10-09T11:47:00
370-C0023A-73R-CC,0.0804.000804.000370-C0023A-73R-CC,19.5804.195804.195Bioturbated calcareous mudstone. very low silt content, very low volcaniclastic content. Silt content contains angular quartz. Little authigenic illite or pyrit visible.2016-10-09T11:23:11
370-C0023A-74R-1,0.0809.000809.000370-C0023A-74R-CC,19.5809.270809.270Drill breccia comprising a few 5-10 cm length clasts of bioturbated mudrock (less bioturbated and green-bentonite ash layer present) similar to 72R-CC mudstone, as opposed to calcite cemented clasts from 73R.2016-11-09T02:12:55
370-C0023A-74R-1,0.0809.000809.000370-C0023A-74R-1,7.5809.750809.750Bioturbated mudstone. Low carbonate content. Black undulating laminae are likely ripples (forsets indicate movement to right of image).Layer is enriched in partically devtirified (pointy bladed and cloudy in XPL) and fresher volcanic glass (angular flatfragments).2016-10-09T11:44:06
370-C0023A-74R-CC,0.0809.750809.750370-C0023A-74R-CC,19.5809.270809.270Described from COMGAS 74R-CC, 6-10 cm. Bioturbated mudstone. little carbonate content some deformation bands and silckened surfaces in fragments.2016-10-09T11:28:10
370-C0023A-75R-1,0.0812.000812.000370-C0023A-75R-CC,54.5813.355813.355Bioturbated mudstone and calcareous bioturbated mudstone. Preservation of some green-bentonite ash layers. The ash layer is predominantly clay and contains fine vitric-volcanic ash.A patch in 75R-1, 23-24 cm is pale yellow and appears altered but does not contain chlorite. based on XRD analysis this may be a thin clay-alteration zone. Injected black clastic vein at 75R-1, 24 cm(floating clasts of surrounding wall rock and some pyrite within. See clastic vein at 76R-1-122.5 cm).Bedding plane dips slightly.2016-11-09T02:22:27
370-C0023A-75R-1,0.0812.000812.000370-C0023A-75R-1,81.0812.810812.810Bioturbated mudrock23-24 A yellowish grey layer with 2 thin, dark green bands (probably chlorite). Consists of dominantly clay (resembling that before core 40R), fine glass and volcanic grains. Few chlorite is observed in the yellowish green part.Upper boundary is disturbed during depositionInjected black clastic vein at 24 cm. Floating clasts of surounding wall rock and some pyrite within. See clastic vein at 76R-1-122.5 cm35 A dark green band. Consist of dominantly clay.Probably with chloriteMissing intervals inferred from XCT images and adjacent intervals2016-10-10T07:42:49
370-C0023A-75R-CC,0.0812.810812.810370-C0023A-75R-CC,54.5813.355813.355Inferred from XCT images and HIWR sample residue2016-10-09T23:30:49
370-C0023A-76R-1,0.0816.000816.000370-C0023A-76R-CC,14.0818.625818.625Bioturbated mudstones and calcareous mudstones.A breciated and well cemented interval is present 817.15 to 817.3 mbsf. At 76R-1, 112-129 there are matrix supported carbonate clasts. They consists of numerous nannofossils enlcuding discoasters and forams, and microcrystalline carbonate. A dark vein with an injection morphology is present within the breccia (about 1 cm diameter). The vein is clastic and has fine sand to silt sized clasts of pummice and scoria (small red fragments).76R-1, 93-110 cm normal faulting with slickenlines.2016-11-09T02:29:29
370-C0023A-76R-1,0.0816.000816.000370-C0023A-76R-1,131.0817.310817.310Bioturbated mudrock5 A carbonate nodule (0.7 m)108-131 Calcareous mudrock102 A zoophycos burrow at the right hand-side of the crack112-129 Carbonate clasts showing lighter colours.They consists of numerous nannofossils enlcuding discoasters and forams, and microcrystalline carbonate. The one at 112 to 121 is 9 cm x 4.5 cm in size, angular. Other lighter clasts are also angular, 1 x 1.5 cm in size.A few of them are inside another larger clasts (7 cm long) and there is a suggestion of shearing.122.5-123.5 A dark vein with an injection morphology is present within the breccia (about 1 cm diameter).The vein is clastic and has fine sand to silt sized clasts of pummice and scoria (small red fragments).93-110 cm normal faulting with slicken lines.2016-10-10T17:44:39
370-C0023A-76R-2,0.0817.310817.310370-C0023A-76R-2,117.5818.485818.485Bioturbated, calcareous mudrockMissing interval inferred from adjacent intervals and XCT imagesNormal faulting observed2016-10-10T09:31:42
370-C0023A-76R-CC,0.0818.485818.485370-C0023A-76R-CC,14.0818.625818.625Inferred as calcareous mudrock from HIWR sample residue and adjacent intervals2016-10-10T03:30:27
370-C0023A-77R-1,0.0820.000820.000370-C0023A-77R-CC,16.5822.375822.375Bioturbated calcareous mudstone and bioturbated mudstone. Pervasive calcite and sulphate mineralisation . In difference to shallower cores calcite cementation overprints ichnofabrics at 77R-2, 77 cm. Additionally there is also anhydrite and barytepresent. Sulphate mineralisation also occurs along veins parallel to slickened surfaces, and takes the form of seams 2 mm thick. Within are euhedral rhombic calcite crystals (< 100 um),and massive baryte crystals(massive - two cleavages visible in rectangular cross section and bright on X-CT). Smectite, baryte and calcite mineralisation also found within beds.Reverse faulting and slickenlines at 77R-1, 55-60 cm and 77R-2, 81-86cm.2016-11-09T05:04:04
370-C0023A-77R-1,0.0820.000820.000370-C0023A-77R-1,74.5820.745820.745Visible Section highly disrupted by drilling and core prep. (Split section image and X-CT slice mismatched).Calcareous mdustone with siltsized clasts of pummice (Black) and volcanic glass often sharp edged. Silt sized flakes of illite.55-60 cm reverse faulting with slicken lines. 55-60 cm mineral veins at 60 cm, consist o baryte (dense, clear/pale white, two strong cleavages). SEM suggests compositions of smectite, barite, and minor amounts of calcite, quartz and anhydrite2016-10-27T02:21:25
370-C0023A-77R-2,0.0820.745820.745370-C0023A-77R-2,146.5822.210822.210Visible Section highly disrupted by core prep.(Split section image and X-CT slice mismatched).Described from working halfBioturbated calcareous mudstone - (concretion).80 cm Mineral veins with slickened surfaces present.Photomicrograph of mineralisation avaialble. Mienralisation not visible on split image, and only seen in working half.Veins are parellel to slickened surfaces and 2 mm thick.Inner mineralisation has small (< 100 um) euhedral rhombic calcite crystals (react HCl), baryte (massive - two cleavages visible in rectangular cross section and bright on X-CT) inner crystals are rhombic and do not react with HCl.SEM suggests compositions of smectite, baryte and some calcite.84-85 cm Loses Gaunge rings/reaction halo surrounds A mineralised burrow .81-86 cm normal faulting with slicken fibers.2016-10-27T02:19:37
370-C0023A-77R-CC,0.0822.210822.210370-C0023A-77R-CC,16.5822.375822.375Described from 370HIWR residue.Non-careous mdustone, minor pyrite.none of the silt components seen in 77R-1.2016-10-10T12:29:07
370-C0023A-78R-1,0.0824.000824.000370-C0023A-78R-CC,35.0827.930827.930Bioturbated mudstone with patchs of brecciation and strata-associated hydrothermal alteration. Within the hydrothermal-alteration patch there is no strong reaction with HCl, and no birght zone on X-CT. XRD suggest clay and smectite alteration.2016-11-09T05:11:23
370-C0023A-78R-1,0.0824.000824.000370-C0023A-78R-1,18.5824.185824.185Drilling fill at the top of the core. Bioturbated mudrcok, subrounded. The bottom piece from 3 to 11 cm (left hand side) is calcareous.2016-10-10T18:11:54
370-C0023A-78R-2,0.0824.185824.185370-C0023A-78R-2,138.0825.565825.565Bioturbated mudrock with 2 zones of brecciated rocks and a zone with carbonate intraclasts.9-12 Brecciated, angular, maximum 1 cm x 2 cm36/38-49 Calcareous mudrock, with angular carbonate-rich itnraclasts (max size 2 cm x 2cm)60-68 Brecciated, angular, maximum 0.3 cm x 0.5 cm2016-10-10T18:35:20
370-C0023A-78R-3,0.0825.565825.565370-C0023A-78R-3,99.5826.560826.560Bioturbated mudrock with tuffaceous mudrock, and alteration zone and brecciated mudrock68-76 Tan-coloured mudrock. Light grey, consists of dominantly clay, abundant angular glass, common small-grained quartz.Gradational change in colour into the surrounding mudrock both at the top and at the bottom. Retains sedimentary stuctures (burrows).79.5-81 A dark burrow probably filled with pyritized materials86.5-89 Dark green mudrock, similar to the alteration zones in previous cores89-93.5 Brecciated, angular, max size 0.2 cm x 0.5 cm2016-10-12T13:01:11
370-C0023A-78R-4,0.0826.560826.560370-C0023A-78R-4,102.0827.580827.580Bioturbated mudrock same as 78R-1. infered from X-CT and catwalk observations.2016-10-11T13:32:27
370-C0023A-78R-CC,0.0827.580827.580370-C0023A-78R-CC,35.0827.930827.930Bioturbated mudrock same as 78R-1. Confirmed from residue and catwalk sample.2016-10-11T13:32:00
370-C0023A-79R-1,0.0828.000828.000370-C0023A-79R-CC,15.0832.525832.525Bioturbated mudstone with patches of brecciation and strata-associated and vein- hydrothermal alteration. 79R-3 interval with numerous cm-sized burrows filled with shelly fragments. Dense yellow clay-rich interval at base of 79R-3 contains smectite,illite, rhodocrosite, anhydrite, pyrite, and calcite.2016-11-09T05:19:52
370-C0023A-79R-1,0.0828.000828.000370-C0023A-79R-1,123.0829.230829.230Bioturbated mudrock0-2.5 cm The mudrock fragment has turned by drilling58-60 Calcareous mudrock from MBIOS2 sample residue. Other missing intervals are inferred.2016-10-11T00:05:15
370-C0023A-79R-2,0.0829.230829.230370-C0023A-79R-2,132.0830.550830.55080-96 Mudrock96-132 Calcareous mudrock96-97 A green, bioturbated band2016-10-10T23:49:32
370-C0023A-79R-3,0.0830.550830.550370-C0023A-79R-3,150.0832.500832.500Bioburbated mudrock56-61 Interval with numerous cm-size burrows filled with yellow carbonate-rich materials.59-60 An angular, yellow, carbonate clast (2 cm x 2 cm)140-145 A band of yellow clay, dense.SEM suggests compositions of smectite, illite, rhodocrosite, anhydrite, pyrite, calcite2016-10-27T02:31:27
370-C0023A-79R-4,0.0832.500832.500370-C0023A-79R-4,32.5832.375832.3751-4 Calcareous mudrock4-8 Brecciated, angular, 0.3 cm x 1 cm in size8=32.5 Mudrock, burrows are commonly filled with yellow carbonate-rich materials2016-10-10T23:57:57
370-C0023A-79R-CC,0.0832.375832.375370-C0023A-79R-CC,15.0832.525832.525Inferred from XCT images2016-10-10T23:58:16
370-C0023A-80R-1,0.0833.000833.000370-C0023A-80R-CC,36.0842.500842.810Bioturbated mudstone with patches of strata-associated hydrothermal alteration and intraformational breccias. Pale white baryte and calcite cementation at 80R-2 65-75 cm is similar to cemented interval in 77R-2, 77-90 cm.Alteration preferentially picks out burrows. XRD and SEM show that the cement consists of smectitie, illite, magnesian-calcite, rhodochrosite and carbonate-fluorapatite.Fault (vein) associated sulphate mineralisation (anhydrite, baryte, carbonate) 80R-5, 4 and 61 cm Normal faulting with slickenlines observed 8-R-2 to 80R-5 and reverse faulting with slicken lines also observed base of 80R-5.Horizontal and slightly dipping beds are repeated several times.2016-11-09T05:30:07
370-C0023A-80R-1,0.0833.000833.000370-C0023A-80R-1,130.0834.259834.3000-10 cm. Large clast of silt and sand-rich mudrock. Similar to 78 R and 79R.3 lithotypes (micrograph available):Mustone - grey, has high proportion of microcystaline quartz and minor calcite.Authigenic illite flakes are present but often contain light brown colouration. Opaque content includes pyrite and clay (possibly devitrifed ash). Both ash and carbonate content low.Sand and silt fill within burrows - light brown in colour.High bioclast content (in 80R-1 this is foraminifera), but also sub-angaular quartz and plagioclase, illite flakes (authigenic) and small black pieces of volcanic glass (Pumice).Glassy, sandy injected enclaves - silt sized clasts of quartz and partically devitrivied volcanic glass (angular picees that most remain black in XPL and amber coloured glass fragments).Margins are sharp and give the impression of injection into mud. Small enclaves of mudstone are often present. Interpreted as collapsed clasts of pummice.2016-10-12T06:41:42
370-C0023A-80R-2,0.0834.259834.300370-C0023A-80R-2,117.5835.397835.475Bioturbated mudstones with bioclast-filled burrows. Calcite is within burrows only. Same mudstone litghologies as 80R-1.Green ash-bearing laminations at 60 and 61 cm.Pale white Baryte and calcite cemented concreation from 65-75 cm.Similar to to cemented interval in 77R-2, 77-90 cm. Cementation appears to pick out burrows. The cement consists of smectitie, illite, clacite (magnesian), rhodochrosite and carbonate fluorapatite.80-81 Carbonate (not all calcite) cemented patch.Different colour and textture from 65-75 cm. Similar to 79-3 143-145 cm.79 cm normal faulting with slicken lines.2016-11-05T21:23:47
370-C0023A-80R-3,0.0835.397835.475370-C0023A-80R-3,149.0836.840836.965Bioturbated mudstone similar to 80R-1. Fine green intervals are chlorite-rich. Reddish burrows are calcite (magnesian)-rich.5-28 cm Breccia with clasts 3-10 cm in length.Breccia evidences close jigsaw fit of pieces and seperation appears minimal in X-CT.28-40 cm. Breccia with clasts the majority of which are 1-3 cm in length.Bedding is slightly dipping.59-62 cm normal faulting with slicken lines.2016-11-05T21:21:39
370-C0023A-80R-4,0.0836.840836.965370-C0023A-80R-4,137.5838.171838.340Bioturbated mudstone45-49 cm. Pale yellow/Tan-coloured mudrock light grey in patches, consists of dominantly clay, abundant angular glass, common small-grained quartz.Gradational change in colour into the surrounding mudrock both at the top and at the bottom. Retains sedimentary stuctures (burrows). Pale white devitrivied ash visible under microscope - silt sized or smaller.Contains anhydrite, pyrite and possibly barite.Photomicrographs available.SEM suggests compositions of rhodochrosite and barite.40-43 cm normal faulting with slicken lines.2016-10-27T02:27:12
370-C0023A-80R-5,0.0838.171838.340370-C0023A-80R-5,125.0839.382839.590Bioturbated mudstone same as 80R-1.Anhydrite vein (muddy) at 4 cmBarite vein at (muddy) 63 cm, asociated with high angle fault.Shelly burrow interval at 81-93 cm25-27 cm normal faulting with slicken lines.105-108 cm reverse faulting with slicken lines.2016-10-13T04:38:13
370-C0023A-80R-6,0.0839.382839.590370-C0023A-80R-6,135.0840.689840.940Bioturbated mudstone same as 80R-1.Horizontal bedding infered from lamination.2016-10-13T04:40:07
370-C0023A-80R-7,0.0840.689840.940370-C0023A-80R-7,151.0842.151842.450Bioturbated mudstone.Deformed volcanic clast 8.5cmGreen ash layer at 11 cm2016-10-11T13:03:50
370-C0023A-80R-CC,0.0842.151842.450370-C0023A-80R-CC,36.0842.500842.810Bioturbated mudstone.Green ash layers at 31 and 35 cm9-10 cm horizontal bedding infered from lamination.2016-10-13T04:41:26
370-C0023A-81R-1,0.0842.500842.500370-C0023A-81R-CC,35.0852.000852.125Bioturbated mudstone with laminae of green-bentonite volcanic ash. Sulphate and sulphide mineralisation occurs within ash and volcaniclast-rich layers and also within faulted and slickened surfaces.Layers containing ash and other volcaniclasts are often altered to pale yellow. Within these intervals black silt-sized clast of opaque pumice and white igneous volcaniclasts are more noticeable.Euhedral Anyhydrite and Framboidal Pyrite are present (about 5-15 %). Sulphate (barite and anhydrite) crystals and veins cut mineralised interval. Veins are muddy and in many cases same colour as grey country rock. Comparable to 78R, 80R and 83R.Normal and reverse faulting with slicken lines is observed and at 81R-2 106.5 cm dolomite is present along slickenside (reverse fault). Beds dip slightly.2016-11-09T07:44:08
370-C0023A-81R-1,0.0842.500842.500370-C0023A-81R-1,134.5843.828843.845Bioturbated mudrock0-22 Coring fill.74-78 Pale yellow/Tan-coloured fine grained mudrock with a very high devitrfied volcanic ash content. Compare to 78R-4, 80R-4 and 81R-1.Photomicrograph available;Black, silt-sized clast of opaque pumice and white igneous volcaniclats visible in hand specimen. Suphate (barite and anhydrite) crystals and veins cut sample (see also X-CT). Authigenic Euhedral Anyhydrite and Framboidal Pyrite.93 cm working half, baryte vein on exterior of core. 95-101 Brecciated mudrock, general 1 cm x 2 cm, maximum 1 cm x 4 cm - may be caused by drilling. 105-105.5 An orange carbonate burrow. 29-31 cm reverse faulting with slicken lines.35-60 cm normal faulting with slicken lines.Bedding is horizontal in upper part, and slightly dipping in lower part.2016-10-13T11:01:01
370-C0023A-81R-2,0.0843.828843.845370-C0023A-81R-2,121.0845.220845.550Bioturbated mudrock.55-56cm Pale yellow/Tan-coloured fine grained mudrock with a very high devitrfied volcanic ash content. Compare to 78R-3, 80R-4 and 81R-1.Compared to volcanic ash layer in 80R-4, the base and top of beds are not sharp, and clast size much smaller (mud) or no longer distinguisyable due to devitrification.Black, silt-sized clast of opaque pumice and white igneous volcaniclats visible in hand specimen. 61.5-64 Same as 55-56cm116-117.5 A tilted, thin, green layer105-110 cm Dolomite along slickenside (reverse fault).Rhombic crystals that do not dissolve in HCl, 90deg. extinction2016-10-13T11:01:32
370-C0023A-81R-3,0.0845.220845.550370-C0023A-81R-3,132.5846.330846.380Mudrock, inferred from COMGAS and MBIOS residues and XCT images0-10 Mudrock (COMGAS residue)88-90 Mudrock (MBIOS2 residue)2016-10-11T23:19:37
370-C0023A-81R-4,0.0846.330846.380370-C0023A-81R-4,107.0847.386847.450Bioturbated mudrock same as 80R-1.Mismatch between X-CT and split half image.6 cm Pyrite vein parallel to bedding.2016-10-12T06:53:28
370-C0023A-81R-5,0.0847.386847.450370-C0023A-81R-5,108.5848.457848.535Bioturbated mudrockThe direction of tilting of bedding and burrows is in the opposite direction of section 2 and 4. May have turned during core cutting.49-59 Offset by drilling31-33 cm slightly dipping bedding infered from lamination.50-57 cm normal faulting with slicken lines.85-87 cm slightly dipping bedding infered from lamination.2016-10-13T04:54:31
370-C0023A-81R-6,0.0848.457848.535370-C0023A-81R-6,140.5849.843849.940Bioturbated mudrockBurrows are largely horizontal370 TTWR1 may conatin mineralisation or bioturbated volcanic ash.2016-10-12T07:16:22
370-C0023A-81R-7,0.0849.843849.940370-C0023A-81R-7,140.0851.225851.340Bioturbated mudrock33-36 Pale yellow/Tan-coloured mudrock. Light grey, consists of dominantly clay, abundant angular glass, common small-grained quartz. Gradational change in colour into the surrounding mudrock both at the top and at the bottom.Anhydrite or other sulphate present. Retains sedimentary stuctures (burrows).Compare to 78R-3, 80R-4 and 81R-1.32 cm slightly dipping bedding infered from lamination.2016-10-13T11:02:44
370-C0023A-81R-8,0.0851.225851.340370-C0023A-81R-8,43.5851.655851.775Bioturbated mudrockBrecciated interval 32 to 34 cm. Clasts may have been displaced into liner. Mudrock mixed with clasts.2016-10-12T08:17:30
370-C0023A-81R-CC,0.0851.655851.775370-C0023A-81R-CC,35.0852.000852.125Bioturbated murdrock.Heavily disturbed by drilling. Many clasts have been rounded by drilling..Calcite cemented clast at 28-30 cm maybe similar to cementation style seen at 81R-2 and 77-2.2016-10-12T08:29:01
370-C0023A-82R-1,0.0852.000852.000370-C0023A-82R-CC,30.5856.195856.195Bioturbated mudstone with several instances of pale-yellow alteration patches. Within the patches dark-angular-glass is more noticeable. Main alteration minerals include anhydrite clay and calcite (little pyrite).Between patches and country rock there is a gradational change in colour and the outline of burrows is preserved. See also 78R-3, 80R-4, 81R-1, 81R-2, 81R-7.Normal faults with slickenlines observed 82R-1.2016-11-09T05:45:39
370-C0023A-82R-1,0.0852.000852.000370-C0023A-82R-1,97.5852.975852.975Bioturbated mudrock25-29.5 Pale yellow//Tan-coloured mudrock light grey in patches, consists of dominantly clay, with minor angular glass, and fine-grained quartz.Gradational change in colour into the surrounding mudrock both at the top and at the bottom. Retains sedimentary stuctures (burrows).See also 78R-3, 80R-4, 81R-1, 81R-2, 81R-7.Pale white microcystaline (ANHYDRITE-CHECK) visible under microscope .19-65 cm several normal faulting with slicken lines observed.2016-10-13T10:59:02
370-C0023A-82R-2,0.0852.975852.975370-C0023A-82R-2,142.0854.395854.395Bioturbated mudrock. Dominantly clay, abundantly glass, few quartz16-35 Burrows are in random directions22 Anhydrite/barite mineral vein, with slickened surfaces.Small (<3mm thickness) SEM sample taken of vein material from archive half.22-24 Pale yellow/Tan coloured horizion in mudrock. More yellow than the mudrock above.Has hemispherical morphology in 2D and is centered around a burrow.Large crstals seen in X-CT.See 82R-1. Small sample taken for SEM.Compare to 83R-2.24-30 Darker mudrock beneath the Tan-cloured mudrock. The base seems to cut 2 burrows, but both are cut by another burrow.25.5-28 Yellow, rounded body with similar compositions to the yellow layer in section 1. Pinches out at left hand side. XCT image shows that it's a layer than thins out.2016-10-13T10:57:52
370-C0023A-82R-3,0.0854.395854.395370-C0023A-82R-3,149.5855.890855.890Bioturbated mudrock137.5-138.5 Carbonate-rich yellow region139-142 mm-size dark fine lines probably produced by bioturbation145-146.5 A 1 cm x 2.5 cm burrow2016-10-13T01:44:49
370-C0023A-82R-CC,0.0855.890855.890370-C0023A-82R-CC,30.5856.195856.195Bioturbated mudrock2016-10-13T01:48:33
370-C0023A-83R-1,0.0861.500861.500370-C0023A-83R-CC,33.0867.490867.490Bioturbated mudstone with patches of strata-associated hydrothermal alteration. At 83R-2 19-29 cm is a zone of pervasive strata-bound sulphate and clay mineralisation (Anhydrite or Baryte). A vein (2cm thick) of baryte and anhydrite cuts into thebedding plane and zone of mineralisation. At 83R-2, 47 cm is abedding parallel vein (1 cm thick) of octahedral pyrite with partially anhedral calcite and a strong green colouration (likely chlorite given context).SEM found abundant pyrrhotite to be present.Beds dip slightly.2016-11-09T06:07:11
370-C0023A-83R-1,0.0861.500861.500370-C0023A-83R-1,148.0862.980862.980Bioturbated Mudrock.Described from XCT and COMGAS resdiue.Similar to 83R-2 and 80R-1.2016-10-13T13:29:04
370-C0023A-83R-2,0.0862.980862.980370-C0023A-83R-2,134.5864.325864.325Bioturbated mudrock similar to 80R-1Interval 0-40cm. preliminary description only, based on XCT and refernce to 82R-1 and 82R-2.19-22 pervaise strata-bound sulphate (Anhydrite or Baryte).27-29 cm Baryte or Anhydrite mineralistion along fault plane that cuts bedding.47 cm vein of octahedral (euhedral) sulfide with partially anhedral white mineral (possibly quartz) and strong green colouration (likely chlorite given context).SEM finds abundant pyrrhotite grains.Gree laminae of devitrified glass at 47 and 112 cm.Slightly dipping bedding infered from lamination.2016-10-27T02:32:51
370-C0023A-83R-3,0.0864.325864.325370-C0023A-83R-3,138.5865.710865.710Described from X-CT and Comgas samples.84-85 cm Possible alteration zone (higher CT -density)118-120 cm possible alteration zone2016-10-13T13:20:29
370-C0023A-83R-4,0.0865.710865.710370-C0023A-83R-4,145.0867.160867.160Biotrubated Mudrock similar to 83R-2 and see also 80R-1 .based on CT possible anhydrite mineralisation 38 -40 cm2016-10-13T12:41:03
370-C0023A-83R-CC,0.0867.160867.160370-C0023A-83R-CC,33.0867.490867.490Bioturbated mudrock similar to 83R-2 and 80R-2.2016-10-13T12:43:57
370-C0023A-84R-1,0.0871.000871.000370-C0023A-84R-CC,25.0879.670879.670Heavily bioturbated mudstones with distinct lithological differences between burrows and host lithology. Host lithology has high proportion of microcystaline quartz. Authigenic illite flakes are present but often light brown. Opaque content; pyrite,clay (possibly devitrified ash). Very minor Vitric ash and carbonate content. Burrows contain a muddy sand- and silt-bearing fill; light brown in colour, high bioclast content, sub-angular quartz and plagioclase, illite flakes (authigenic) andsmall black pieces of volcanic glass (Pumice). Green-bentonite ash layers present. Pyritised burrows are notably vuggy. Small patches of alteration in comparison to cores 81R to 83R.Sand-filled vein 84R-7,11-13.5cm.2016-10-26T13:46:44
370-C0023A-84R-1,0.0871.000871.000370-C0023A-84R-1,131.0872.310872.310Mustone - grey, has high proportion of microcystaline quartz and minor calcite. Authigenic illite flakes are present but often contain light brown colouration.Opaque content includes pyrite and clay (possibly devitrifed ash). Both ash and carbonate content low. Sand and silt fill within burrows - light brown in colour.High bioclast content (in 80R-1 this is foraminifera), but also sub-angaular quartz and plagioclase, illite flakes (authigenic) and small black pieces of volcanic glass (Pumice).Patches of clay alteration around burrows rich in volcaniclsts (pummice and scoria). Images taken.Several green clay laminae. Note that one of these cuts burrow at 72 and 71 cm.2016-10-26T08:36:34
370-C0023A-84R-2,0.0872.310872.310370-C0023A-84R-2,124.0873.550873.550Bioturbatted mudstone with patchy clay mineralisation2016-10-26T09:51:25
370-C0023A-84R-4,0.0875.550875.550370-C0023A-84R-4,121.5876.270876.270Bioturbated mudstone, some patches of alteration in areas with volcanicalsts.2016-10-26T09:58:29
370-C0023A-84R-5,0.0876.270876.270370-C0023A-84R-5,36.0876.630876.630Bioturbated mudstone with calcite cemenetation and clay mineralisation. The carbonate-rich interval consists of calcite, anhydrite and quartz.2016-11-05T18:53:02
370-C0023A-84R-7,0.0878.750878.750370-C0023A-84R-7,134.5879.420879.420Bioturbated mudstone. same as 84R-1Sandstone vein with shear fabric 11 to 13.5cm .Clay mineralisation identified from X-CT, and with reference to earlier cores 77R to 83R.Micrograph taken2016-10-26T13:21:57
370-C0023A-84R-CC,0.0879.420879.420370-C0023A-84R-CC,25.0879.670879.670Bioturbated Mudstone. Same as 84R-1.2016-10-26T13:29:45
370-C0023A-85R-1,0.0880.500880.500370-C0023A-85R-CC,17.0885.640885.640Heavily bioturbated mudstone with laminae of green-bentonite volcanic ash. Minor patches of hydrothermal alteration along burrows (similar to 84R). Alteration patches contain clay and calcite. Similar to margins of alteration zone 84R-2.Normal faulting with slickenlines 85R-4 and 85R-CC. Mineral veins present. Beds dip slightly.2016-11-09T06:14:38
370-C0023A-85R-1,0.0880.500880.500370-C0023A-85R-1,149.0881.990881.990Bioturbated mudrock1-26 Drilling fill, subrounded. Burrows are in different orientations 30-32, 39-41, 43.5-46 Thin green layers 37.5-40, 51-53, 52.5-55.5 Zoophycos 39-39.5 Pyrite nodule, 0.1 cm x 0.5 cm 50-50.5White layer, probably with anhydrite. To be confirmed with SEM. Some infiltration of drilling mud.2016-10-26T19:57:08
370-C0023A-85R-3,0.0883.110883.110370-C0023A-85R-3,106.5884.175884.175Bioturbated mudrockBurrows are inclined and are commonly filled with carbonate91.5-93 Bioturbated rhodochrosite layer, 2 cm thick2016-10-26T21:20:27
370-C0023A-85R-4,0.0884.175884.175370-C0023A-85R-4,129.5885.470885.470Bioturbated mudrock with inclined burrows9-12, 38-40 Patches of white colour. Probably anhydrite11.5-15, 49-52 Yellow carbonate burrow47-48, 57-59, 66-68, 87-89, 96.5-98 thin green bands57-63 Two carbonate layers86-87, 88.5 Pyrite nodules111-113 White layer, rich in apatite, Ca, silicate and minor of zinc in the smectite matrix116-120 Normal faultings with slickenlines and mineral veins.85-87 Slightly dipping bedding infered by lamination.112-113 Horizontal bedding deduced between ashidic layer and overlaying mudstone.2016-11-06T05:45:51
370-C0023A-85R-CC,0.0885.470885.470370-C0023A-85R-CC,17.0885.640885.640Bioburbated mudrock with inclined burrows3-4 Normal faulting with slickenlines2016-10-27T11:20:25
370-C0023A-86R-1,0.0890.000890.000370-C0023A-86R-3,151.0893.190893.190Bioturbated mudstone with a barite-rich rhodocrosite alteration patc. The patch is pale-yellow and the main alteration minerals are calcite, barite, rhodocrosite, dolomite, apatite and fluorapatite, with some green chlorite and smectitie,mineralization. There is a sharp boundary beneath the patch likely indicating stratigraphic control. At the boundary euhedral barite crystals have formed (0.1 - 0.2 cm in size).Normal fauting with slickenlines (86R-3, 146-151 cm).2016-11-09T06:26:24
370-C0023A-86R-1,0.0890.000890.000370-C0023A-86R-1,26.0890.260890.2600-15 Calcareous, bioturbated mudrock. heavy calcite precipitation15-25.5 Bioturbated mudrock2016-11-09T06:20:27
370-C0023A-86R-2,0.0890.260890.260370-C0023A-86R-2,142.0891.680891.680Bioturbated mudrock16-18 A carbonate area at the left hand side. Probably a burrow67-71 Yellow area consists of smectitie, calcite, barite, rhodochrosite, dolomite, apatite and fluorapatite, with some green chlorite mineralization.Sharp boundary below the area. At the boundary are euhedral, sub-angular barite (0.1 - 0.2 cm in size).80-82 A pyritized burrow filled with carbonate (1 cm x 3 cm)125 Two pyrite nodules, 0.5 cm in size2016-11-05T19:03:32
370-C0023A-86R-3,0.0891.680891.680370-C0023A-86R-3,151.0893.190893.190Bioturbated mudrock70-71.5 Pyrite nodule (0.5 cm in size)146-151 normal faulting with slickenlines2016-10-30T07:08:38
370-C0023A-87R-1,0.0899.500899.500370-C0023A-87R-8,53.5908.380908.380Bioturbated mudstone with alteration patches and intraformational breccia. Alteration patches are stratiform and comprise two zones in 87R-5. The topmost zone 87R-5, 17 32cm has carbonate, sulphate and clay mineralisation.Whereas mineralisation located above the breccia (lower zone 97R-5, 32-49 cm) and a zone of hydraulic fracturing has anhydrite, rhodocrosite (with minor dolomite/siderite) and minor baryte and pryite.Within burrows replacement of shells and biolcasts leaves small pink and orange crystals that psuedomoprh after the original bioclast, whilst the muddy matrix of the burrow reddens or turns orange or pink.Outside of burrows the country rock is altered slightly green, and contains anhydrite which during core description is evident a white paste that dissolves in cold water. Both pyrite and baryte also replace bioclasts within burrows(compare to growth of euhedral crystals in veins or other intervalsBedding parallel seam of sand and pyrite-mineralisation similar to 56R,61R-2 and 63R-2.Healed extensional fracture (87R-5, 79-88cm) and fracture-network (87R-6, 17-44cm).2016-11-09T07:14:24
370-C0023A-87R-1,0.0899.500899.500370-C0023A-87R-1,135.5900.855900.855Hevauilty bioturbated mudstone.Dense remineralisation of burrows at 15to 19 cm.Compare to section 87R-5.2016-10-27T11:58:50
370-C0023A-87R-2,0.0900.855900.855370-C0023A-87R-2,65.0901.505901.505Mudstone with burrows and bioturation infered from X-CT, sample residues and overlying lithologies.2016-10-27T12:00:27
370-C0023A-87R-4,0.0902.865902.865370-C0023A-87R-4,134.0904.205904.2056-7 Rhodochrosite burrow with barite fill2016-10-30T17:26:07
370-C0023A-87R-5,0.0904.205904.205370-C0023A-87R-5,137.0905.575905.575Heavily bioturbated mudstone with mineralisation along burrows, above a breccia and faultzone.The mudrock matrix consists of dominantly smectitie with chlorite.20 - 32 - mineralisatrion is anhydritre (white bpaste that dissolves in coldwater) and carbonae (small pink crystals of rhodocoisite). Mienralisation mostly along burrows, with anhydrite and chlorite in matrix.32 - 50 Tan coloured/pale yellow colouered alteration zone with calcite and rhodochrosite. Sulphide mienralisation within burows indludes pyrite and then baryte and perhaps sphalerite on exterior.Micrographs taken.43-44 A green chloritized green zone79-88 Extensional healed fracturing.2016-11-06T05:56:59
370-C0023A-87R-6,0.0905.575905.575370-C0023A-87R-6,115.5906.730906.730Heavily bioturbated mudstone with some mineralisation along burrow sbetwen 26 to 33 cm.1-4 appear white when dry. Probably rich in anhydrite17-44 Extensional healed fracturing network.2016-11-06T06:00:32
370-C0023A-88R-1,0.0909.000909.000370-C0023A-88R-CC,49.5914.585914.585Bioturbated mudstone with alteration patches that are mostly confined to burrows. Stratiform alteration patches are dark red and slightly dense on X-CT. Burrows contain rhodocrosite and calcite, that often replaces shells and fossils turning thempink or orange. Reverse faulting with slickenlines (88R-2, 52-55cm).2016-11-09T06:48:41
370-C0023A-88R-1,0.0909.000909.000370-C0023A-88R-1,108.0910.800910.800Bioturbated mudrock14-14.5 Red burrow rich in carbonate25.5-27, 28-28.5 Reddish yellow patches, moderately denseWait for SEM work on 87R for the identity of the red mineral2016-10-27T23:09:16
370-C0023A-88R-2,0.0910.800910.800370-C0023A-88R-2,94.5911.250911.250Bioturbated mudrock. Burrows are usually dark (rich in pyrite), but a few are red (10.5-15, 72-76: also rich in carbonate; 19.5-21: does not react with 10% HCl).Burrows above and below 59 cm have different oridentations52-56 reverse faulting with slickenlines.2016-11-06T06:32:10
370-C0023A-88R-3,0.0911.250911.250370-C0023A-88R-3,126.5912.290912.290Bioturbated mudrock2016-10-27T23:18:01
370-C0023A-88R-4,0.0912.290912.290370-C0023A-88R-4,88.0913.170913.170Biotubated mudrock2016-10-27T23:19:07
370-C0023A-88R-5,0.0913.170913.170370-C0023A-88R-5,92.0914.900914.900Bioturbated mudrock69-79, 86-90, carbonate-rich, heavily bioturbated areasNumerous burrows that are dark in colour (rich in pyrite), but a few are yellow and are rich in carbonate (0.5-1.5, 10-12, 28-33, 46-50, 56.5-58)2016-10-27T23:23:42
370-C0023A-88R-CC,0.0914.900914.900370-C0023A-88R-CC,49.5914.585914.585bioturbated mudrock41-43 Green mineralization with pyrite nodules2016-10-27T23:28:56
370-C0023A-89R-1,0.0918.500918.500370-C0023A-89R-CC,34.5928.000928.875Bioturbated mudstone with alteration patches that are mostly confined to burrows. Stratiform alteration patches are dark red and slightly dense on X-CT. Burrows contain rhodocrosite and calcite (similar to 88R).2016-11-09T06:53:56
370-C0023A-89R-1,0.0918.500918.500370-C0023A-89R-1,137.5919.759919.875Bioturbated mudrock11.5-14,90.5-91.5, 113-117 Yellowish red brurrows rich in carbonate72-73.5 Yellowish red burrows26-37 Intervals above and below show burrows in different orientations.97-98 Black mudrock consists of dominantly smectite, probably an altered interval. A grey band runs through it consists of dominantly smectite and abundant carbonate. A pyrite nodule at 99.2016-10-28T03:56:54
370-C0023A-89R-2,0.0919.759919.875370-C0023A-89R-2,133.0920.977921.20592-94 Pyrite with some white areas which are probably anhydrite107-109 Reddish brown band2016-10-28T03:39:27
370-C0023A-89R-5,0.0923.587924.550370-C0023A-89R-5,122.5924.708925.280Bioturbated mudrock119.5-121.5 Brown, oxidized pyrite vein2016-10-28T03:43:00
370-C0023A-89R-6,0.0924.708925.280370-C0023A-89R-6,148.5926.680926.765Bioturbated mudrockLarge burrows at 24-29.5 (brown, pyritized), 79-84 (rich in pyrite and carbonate), 104-108.5 (carbonate)2016-10-28T03:45:43
370-C0023A-89R-7,0.0926.680926.765370-C0023A-89R-7,103.5927.160927.800Possible alteration at 4-8 cm2016-10-28T03:46:34
370-C0023A-89R-CC,0.0927.684928.530370-C0023A-89R-CC,34.5928.000928.875Bioturbated mudrock2016-10-28T03:48:14
370-C0023A-90R-1,0.0928.000928.000370-C0023A-90R-CC,25.0934.110934.110Bioturbated mudstones and stratiform (burrow) carbonate, sulphate and clay mineralisation. A patch 90R-3,71-91 cm is hydrothermally altered to a high level with a chlorite and anhydrite, beneath which is a rhodocrosite bearing interval.Baryte is present as euhedral crystals along with rhodocrosite (and associated minerals listed for 80R) mineralisation which replaces fossils and other small clasts concnetrated within burrows. Veins of baryte cut strata-bound mineralisation.Veins of pyrite (or other dark metalic sulphide) cut both stratiform disseminated mineralisation and baryte.High angle dipping veins, some of which have a slight horizontal dip (90R-3, 80-89cm).2016-11-09T07:04:07
370-C0023A-90R-1,0.0928.000928.000370-C0023A-90R-1,111.0929.110929.110Bioturbated Mudstone as 80RNodule is mineralised with baryte, spalterite and pyrite. micrograph available.2016-10-28T07:00:43
370-C0023A-90R-3,0.0930.620930.620370-C0023A-90R-3,98.0931.600931.600Heavily Bioturbated mudstone with alteration and mineralisation around burrows.65-70 cm some sulphate (anhydrite precipitatino around calcite-cemented burrows)71 - 81 cm Chloritised (green) mudstone with anhydrite precipitatopm around burrows.Burrows contain calcite.Sulphide mineralisation comprises sphalerite (orange) cut by darker veins of sulphide and white sulphate veins (Pyrite and another darker sulphude).81-90 cm Clarbonate cemented interval cut by veins of sphlaerite80-89 almost of these veins are high angle dipping but some of them are slightly and horizontal dipping.2016-11-06T06:36:49
370-C0023A-90R-4,0.0931.600931.600370-C0023A-90R-4,100.0932.600932.600Heavily bioturbated mudstone with baryte vein in fault at top and stratiform carbonatre vein at base (red/siderite/MnCO3??)2016-10-28T11:15:52
370-C0023A-90R-5,0.0932.600932.600370-C0023A-90R-5,126.0933.860933.860Heavily bioturbated mdustone2016-10-28T11:18:16
370-C0023A-90R-CC,0.0933.860933.860370-C0023A-90R-CC,25.0934.110934.110Drill breccia containing bioturbated mudstone hydrothermally altered mudstone.2016-10-28T11:25:39
370-C0023A-91R-1,0.0937.500937.500370-C0023A-91R-CC,45.0947.000947.995Bioturbated mudstones and minor alteration patches of carbonate and clay mineralisation. Many burrows are reddened and have had their fill replaced with calcite and rhodocrosite. Small pyrite veins in straight sided fractures parallel andperpendicualr to bedding are present 91R-6, 94-110cm.Small seams seam of sand and pyrite-mineralisation similar to 56R, 61R-2, 63R-2 and 87R.Healed fault observed (91R-5, 4-23cm). Bedding dips slightly.2016-11-09T07:06:18
370-C0023A-91R-1,0.0937.500937.500370-C0023A-91R-1,5.5937.550937.555Bioturbated mudstone2016-10-28T12:19:12
370-C0023A-91R-2,0.0937.550937.555370-C0023A-91R-2,140.0938.817938.955Drill breccia of bioturbated mudstone and a few clasts of carabonate-aletered burrows2016-10-28T12:22:57
370-C0023A-91R-3,0.0938.817938.955370-C0023A-91R-3,125.0939.949940.205Bioturbated mudstone2016-10-28T12:30:59
370-C0023A-91R-4,0.0939.949940.205370-C0023A-91R-4,88.5940.750941.900Bioturbated mudstone2016-10-28T14:05:09
370-C0023A-91R-5,0.0940.750941.900370-C0023A-91R-5,139.5942.120942.485Bioturbated mudrstone with alteration patch frmo 72 to 80 cm.Red alteration colour common in burrows.72 t0 76 cm Pyrite + sand layer parallel to bedding. Compare to 61R and other instances.76 to 82 cm Carbonate + clay alteration108-123 healed fault2016-10-30T07:22:56
370-C0023A-91R-6,0.0942.120942.485370-C0023A-91R-6,112.0943.260943.605Bioturbated mudstones with calcification(MnCO3) of burrows and pyrite veins occupying tension veins parallel to bedding (small straight sided veins) and perpendicualr to it (these are different to tigmatic veins).Pyrite veins are observed at 94-110cm.2016-11-06T06:43:20
370-C0023A-91R-7,0.0943.260943.605370-C0023A-91R-7,137.5944.271944.980Bioturbated mudstone with alteration along burrows (calcite and MnCO3).Small pyrite sandstone seam at 117 - similar to 91R-5 and 61R and other instances.2016-10-28T14:59:53
370-C0023A-91R-8,0.0944.271944.980370-C0023A-91R-8,115.0945.312946.130Bioturbated mudstones with minor alteration including pyrite along small straight sided veins and calcification along burrows (turned red to rhodochrosite).2016-10-28T15:03:56
370-C0023A-91R-9,0.0945.312946.130370-C0023A-91R-9,141.5946.593947.545Bioturbated mudstones with brecciation at top and pyrite veining. Pyrite is fine grained paste.62-62 pyrite-rich (black sand) layer83-84 slightly dipping bedding deduced by lamination2016-10-30T07:26:55
370-C0023A-92R-1,0.0947.000947.000370-C0023A-92R-CC,2.0953.615953.615Bioturbated mudstone with alteration patches that are mostly confined to reddened burrows and a carbonate alteration patch at 92R-4 (original ichnofabrics masked by alteration). Burrows contain rhodocrosite and calcite (similar to 88R);replacement of shells and biolcasts to small pink and orange crystals that psuedomoprh after the original bioclast. Within burrows there is some replacement by baryte and pyrite also.Bedding dips slightly.2016-11-09T07:26:05
370-C0023A-92R-1,0.0947.000947.000370-C0023A-92R-1,143.0948.430948.430Bioturbated mudrock98.5-101 Red burrow, rich in carbonate. Check 87R for composition105-106, 130-132 slightly dipping green bands2016-10-30T07:28:25
370-C0023A-92R-2,0.0948.430948.430370-C0023A-92R-2,98.0949.410949.410Inferred from XCT images and the MBIOS2 residue.2016-10-28T20:15:10
370-C0023A-92R-3,0.0949.410949.410370-C0023A-92R-3,136.5950.775950.775Inferred from XCT images and the COMGAS residue.2016-10-28T20:13:30
370-C0023A-92R-4,0.0950.775950.775370-C0023A-92R-4,146.0952.235952.235Bioturbated mudrock22-38 Carbonate-rich area, bioturbated. 28-37 appears yellow. Green band at 30.2016-10-28T20:03:32
370-C0023A-92R-5,0.0952.235952.235370-C0023A-92R-5,136.0953.595953.595Bioturbated mudrock108-109.5, 118-120.5 Reddish brown burrows, rich in carbonate. Check 87R for compositions.2016-10-28T20:07:21
370-C0023A-93R-1,0.0957.500957.500370-C0023A-93R-CC,40.0967.500967.895Bioturbated mudstones in which many burrows are reddened and have had their fill replaced with calcite and rhodocrosite. Several burrows have pale yellow alteration halos giving the impression of a level of alteration slightly lesser than that seenin the type of alteration patch present in core 82R-1 or 87R-5. Small sandy pyrite veins in straight sided fractures parallel and perpendicualr to bedding are present 91R-6, 94-110cm similar to small seams seam of sand andpyrite-mineralisation in 56R, 61R-2, 63R-2 and 87R. Slightly dipping pyrite vein with some white materials which is probably anhydrite (93R-2, 82.5-83.5cm).2016-11-09T07:36:50
370-C0023A-93R-2,0.0958.100958.300370-C0023A-93R-2,85.5958.832958.885Bioturbated mudrock45-49 Yellowish brown burrow, rich in carbonate82.5-83.5 Pyrite vein with some white materials which is probably anhydrite2016-10-29T01:24:34
370-C0023A-93R-3,0.0958.832958.885370-C0023A-93R-3,109.0959.881959.975Bioturbated mudrock2016-10-29T01:34:55
370-C0023A-93R-4,0.0959.881959.975370-C0023A-93R-4,133.0961.160961.305Bioturbated mudrock28-29.5 Green band30-32.5 Pyrite vein2016-10-29T01:36:53
370-C0023A-93R-6,0.0962.315962.505370-C0023A-93R-6,95.0963.229963.455Bioturbated mudrock with brown burrows. Some of these burrows react with 10% HCl but some do not. See 87R for compositions.2016-10-29T01:40:44
370-C0023A-93R-8,0.0964.306964.575370-C0023A-93R-8,141.0965.663965.98545-46.5 Yellowish brown burrow, rich in carbonate2016-10-29T01:43:00
370-C0023A-93R-9,0.0965.663965.985370-C0023A-93R-9,119.0966.807967.175Bioturbated mudrock104-106 Infiltration of drilling with fragments from the drill bit116-119 Faulted yellowish brown area, rich in carbonate2016-10-29T01:57:50
370-C0023A-93R-10,0.0966.807967.175370-C0023A-93R-10,32.0967.115967.495Bioturbated mudrock2016-10-29T01:59:01
370-C0023A-93R-CC,0.0967.115967.495370-C0023A-93R-CC,40.0967.500967.89518 Burrow orientation changes2016-10-29T01:59:54
370-C0023A-94R-1,0.0968.000968.000370-C0023A-94R-CC,35.5978.000978.305Heavily bioturbated mudstones with distinct lithological differences between burrows and host lithology. Relative to cores 90R-91R alteration and mineralisation within burrows in 94R is minor. Small pyrite veins and baryte veins present.Also present in 94R-6 and 94R-7 are small seams of sand and pyrite-mineralisation similar to those in 56R, 61R-2, 63R-2 and 87R.Some healed faults observed (94R-6, 43-45 cm, 108-111cm).2016-11-09T07:40:21
370-C0023A-94R-1,0.0968.000968.000370-C0023A-94R-1,108.0969.480969.800Heavily bioturbated mudstone same 80R, burrows unaltered.2016-10-29T08:30:57
370-C0023A-94R-2,0.0969.480969.800370-C0023A-94R-2,121.0970.222970.290Mudstone as 94R-1, fom XCT2016-10-29T08:35:27
370-C0023A-94R-3,0.0970.222970.290370-C0023A-94R-3,128.0971.464971.570mudstone infered from XCT2016-10-29T08:35:00
370-C0023A-94R-5,0.0972.673972.815370-C0023A-94R-5,132.0973.953974.135Heavily Bioturbated Mudstone with alteration (MnCO3) of a single burrow.2016-10-29T08:41:20
370-C0023A-94R-6,0.0973.953974.135370-C0023A-94R-6,147.5975.385975.610Heavily Bioturbated mudstone with minor alteration (carbonate and MnCO3)43-45, 108-111 healed faults observed2016-10-30T07:34:39
370-C0023A-94R-7,0.0975.385975.610370-C0023A-94R-7,127.0976.617976.880Mudstone with minor altearion patches.Two instrances of beddign parallel Py + sand mineralisatipn at 80 and 125 cm. Similar styl eto 61R sand + pyrite vein2016-10-29T08:54:35
370-C0023A-95R-1,0.0978.500978.500370-C0023A-95R-CC,20.0985.125985.125Heavily bioturbated mudstones with distinct lithological differences between burrows and host lithology. Relative to core 94R rhodocrosite and sulphate mineralisation is more developed and alteration patches are present(areas of intense mineralisati on, with diffuse margins, that mask sedimentary fabric). Replacement by rhodocrosite and associated minerals (rhodocrosite, Mn-Calcite, magnesian-calcite, carbonate-fluorapatite) is pervasive andin some places small orange veins of rhodocrosite have been created by the intersection of replaced clasts and small veins.Mineral vein 95R-3, 37-41cm and normal faulting with mineral veins 95R-4, 8-10cm. Bedding dips slightly.2016-11-09T07:52:30
370-C0023A-95R-1,0.0978.500978.500370-C0023A-95R-1,148.5979.985979.985Sulphide and sulphate mineralised bioturbated mudstonePatch at 112 to 134 is yellow and calcite and sulphate minealised.Mineralisation includes small veins (perp and para) of pyrite and sulphate, and disseminated pyrite, sphalerite and barytre.2016-10-29T13:41:13
370-C0023A-95R-3,0.0981.750981.750370-C0023A-95R-3,59.0981.665981.665Intensely altered zone, with small vertical veinlets of metal sulphide (Py and Sp).Disseminated Sp, Py, Ba, An and yellow carbonate (Sd +MnCO3)??XRD on 39-40 (burrow): calcite (magnesian), quartz, smectitie, chlorite, illiteMineral vein observed (95R-3, 37-41cm).2016-11-06T07:33:13
370-C0023A-95R-4,0.0981.665981.665370-C0023A-95R-4,98.5982.650982.650Relatively unaltered bioturbated mudstone, with a bedding parallel pyritic sandy vein parallel to bedding similar to 61R8-10 normal faulting with barite vein2016-11-02T01:41:24
370-C0023A-95R-5,0.0982.650982.650370-C0023A-95R-5,146.0984.110984.110Relatively unaltered bioturabted mudstone. Notably shelly interval50-60 faulting observed2016-11-02T01:43:04
370-C0023A-95R-6,0.0984.110984.110370-C0023A-95R-6,81.5984.925984.925Bioturbated mudstone with vein sulphide and sulphate mineralisation.Minor mineralisation along burrows.2016-10-29T14:08:23
370-C0023A-95R-CC,0.0984.925984.925370-C0023A-95R-CC,20.0985.125985.125hydrothermally altered bioturbated mudrock2016-10-29T14:11:41
370-C0023A-96R-1,0.0989.000989.000370-C0023A-96R-CC,25.5999.000999.265Heavily bioturbated mudstones with distinct lithological differences between burrows and host lithology. Relative to core 95R rhodochrosite and sulphate mineralisation is less pronounced at the top of the core and the veinlets are regions of intensereplacement are less common.Dip-slip faulting with mineral vien along fault plane 96R-2, 3-12cm; 96R-4, 34-41cm. Healed extensional fracture network (96R-4, 135-136cm). Bedding dips slightly.2016-11-09T07:55:31
370-C0023A-96R-1,0.0989.000989.000370-C0023A-96R-1,121.0990.179990.210Heavily bioturbated mudstone with silt and bioclast filled burrows2016-10-29T14:35:57
370-C0023A-96R-2,0.0990.179990.210370-C0023A-96R-2,115.0991.299991.360Unlatered bioturbated mudstone3-12 Dip-slip fualting observed.2016-11-02T01:46:56
370-C0023A-96R-3,0.0991.299991.360370-C0023A-96R-3,79.0992.690992.150Bioturbated mudstone with (Red) mineralisation along burrows and fualt breccia with clay minerlisation at top. The green alteration zone consists of mostly altered smectite with trace chlorite and fluorapatite.2016-11-05T19:48:24
370-C0023A-96R-4,0.0992.690992.150370-C0023A-96R-4,136.0993.394993.510Shelly bioturbated mudstone with little alteration34-41 dip-slip faulting observed135-136 slightly dipping bedding deduced by pyrite-rich black sand lamination2016-11-02T02:06:40
370-C0023A-96R-7,0.0995.746995.925370-C0023A-96R-7,109.5996.813997.2005.5-6.5 Smaller calcitic and pyritized burrows inside a bigger burrow with anhydrite, barite and calcite2016-11-04T23:53:12
370-C0023A-96R-CC,0.0998.752999.100370-C0023A-96R-CC,25.5999.000999.265Bioturbated mudstone but brecciated by drillingVein Baryte at base.2016-10-29T16:21:50
370-C0023A-97R-1,0.0999.500999.500370-C0023A-97R-CC,10.5100.921100.921Heavily bioturbated mdustone with minor alteration and mineralisation along burrows. Several stratiform zones of pyrite and clay mineralisation (sandy seams of pyrite) similar to the type seem in 61R-2. Very thick seam found in 97 R-7(clay similar to 96R-3). Mineralised clasts in 97R-CC match to byrite mineralisation in 98R-1 suggesting the existence of a vein between the two cores (97R and 98R).Normal faulting with mineral veins along fault plane (98R-6, 14-21cm; 98R-7, 42-43cm).Obliquely dipping bedding deduced between mudstone and overlying black-sandy pyrite seam (97R-7, 29-33cm).2016-11-09T07:59:02
370-C0023A-97R-1,0.0999.500999.500370-C0023A-97R-1,105.0100.550100.550Heavily bioturnated mudstone some rhodchoriste alteration of burrows.2016-10-30T05:57:20
370-C0023A-97R-2,0.0100.550100.550370-C0023A-97R-2,141.0100.196100.196Bioturbated mudstone with rhodocrhosite alteration2016-10-30T06:00:01
370-C0023A-97R-3,0.0100.196100.196370-C0023A-97R-3,116.0100.312100.312Bioturbated mudstone with bedding parallel vein similar to 61R-2.2016-10-30T06:02:58
370-C0023A-97R-5,0.0100.431100.431370-C0023A-97R-5,141.5100.573100.573Bioturbated mudstone with bedding -parallel sandy pyrite mineralisation.2016-10-30T06:08:50
370-C0023A-97R-6,0.0100.573100.573370-C0023A-97R-6,123.0100.696100.696Bioturbated mudstone, with relatively minor alteration (pryite-sandstone seams)14-21 normal faulting with mineral veins along the fault plane.2016-11-06T07:45:15
370-C0023A-97R-7,0.0100.696100.696370-C0023A-97R-7,114.5100.811100.811Bioturbated mudstone with alteration along a black-sandy pyrite seam.Edge of seam is MnCO3 and inner part green clay then a black blue clay simialr to 96R-3. XRD on the green clay finds dominantly smectite with trace albite.Normal faulting with mineral veins along the fault plane (98R-7, 42-43cm).Obliquely bedding deduced between mudstone and overlying black-sandy pyrite seam (97R-7, 29-33cm).2016-11-06T07:52:02
370-C0023A-97R-CC,0.0100.910100.910370-C0023A-97R-CC,10.5100.921100.921Drill breccia comprisig clasts of biotruabted mudstone, some of which are alyered and include pyrite, and black pyritic clay/sand seam - similar to 61R-2 and 97R-7.2016-10-30T06:28:15
370-C0023A-98R-1,0.0101.000101.000370-C0023A-98R-CC,38.5102.000102.430Heavily bioturbated mudstone with significant replacative alteration and mineralisation along burrows. Many instacnes of Rhodochorsite mineralisation and calcite mineraisation in burrows as described for 92R. Large clast of fibreous vein baryte attop of 98R-1. Several smaller baryte and clay veinlets present.Several bedding instances of the near bedding parallel pyrite-mineralisation found in 56R, 61R-2, 63R-2 and 87R except that green clay is present instead of sand.Several healed faults showing normal sense (from 98R-2, 106cm to 98R-4, 43cm). Mineral veins observed along many fault planes by X-CT. Healed fault showing normal sense (from 98R-2, 106cm to 98R-4, 43cm).2016-11-09T08:04:02
370-C0023A-98R-1,0.0101.000101.000370-C0023A-98R-1,64.0101.614101.640Bioturbated mudstone with shelly infill of burrows.Top of section is baryte vein2016-10-30T19:10:57
370-C0023A-98R-2,0.0101.614101.640370-C0023A-98R-2,135.0101.191101.199Healed fault showing normal sense (98R-2, 106-108cm, 109-112cm).Mineral vein along fault plane (98R-2, 109-112cm).2016-11-06T07:56:00
370-C0023A-98R-3,0.0101.191101.199370-C0023A-98R-3,127.5101.313101.326healed faults showing normal sense (98R-3, 7-12cm. Mineral veins observed along many of the fault plane by XCT image.Several normal faulting withslickenlines (98R-3, 10-120cm. Mineral veins observed along many of the fault plane by XCT image.2016-11-06T08:18:10
370-C0023A-98R-4,0.0101.313101.326370-C0023A-98R-4,114.5101.423101.441bioturbated mdustone with slight alteration including pyrite veinlets (normal and parallel tp bedding) and MnC03 filling burrows.Several normal faulting withslickenlines (98R-4, 27-43cm. Mineral veins observed along many of the fault plane by XCT image.2016-11-06T08:19:00
370-C0023A-98R-5,0.0101.423101.441370-C0023A-98R-5,142.0101.559101.583Bioturbated mudstone103 Red-coloured burrow with smectite, quartz, calcite, rhodochrosite and trace apatite.2016-11-05T19:06:56
370-C0023A-98R-6,0.0101.559101.583370-C0023A-98R-6,57.0101.614101.640Bioturbated mudstone with prevasive calcite and clay alteration (could be logged as mustone as origainal fabric not lost.2016-10-30T12:31:38
370-C0023A-98R-7,0.0101.614101.640370-C0023A-98R-7,96.0101.706101.736bitrubated mudstone little alteration2016-10-30T12:33:19
370-C0023A-98R-8,0.0101.706101.736370-C0023A-98R-8,105.5101.807101.841Bioturbated mudstone with both black pyritic sand veins and hyrothermal alteration2016-11-06T08:21:20
370-C0023A-98R-9,0.0101.807101.841370-C0023A-98R-9,77.5101.881101.919Bioturbated mudstone with minor alteration2016-10-30T12:49:29
370-C0023A-98R-10,0.0101.881101.919370-C0023A-98R-10,85.5101.963102.450Biotrubated mudstone with patches of hydrothermal alteration2016-10-30T12:53:12
370-C0023A-99R-1,0.0102.500102.500370-C0023A-99R-CC,45.0103.500103.830The top of 99R is heavily bioturbated mudstone with significant replacative alteration and mineralisation along burrows. Many instacnes of Rhodochorsite mineralisation and calcite mineraisation in burrows as described for 92R-98R.A different style of mineralisation is present in In 99R-7 where the mudstone is less indurated and has been disturbed by drilling. A distinct patch of grey-green smectitie, chlorite and calcite mineralisation (99R-7,70 cm) is found above a pale yellowpatch of smectitie, chlorite, calcite and carbonate fluorapatite (99R-7, 90 cm). Beneath this is a grey area with with smectitie, chlorite, calcite, rhodochrosite (99R-7,99 cm). Instances of the near-bedding parallel pyrite-mineralisation found in56R, 61R-2, 63R-2 and 87R are also present. Beneath this interval there is some brecciation.Normal faulting with slickenlines (from 99R-4, 95-118cm to 99R-5, 58-105cm). Mineral veins observed along the fault plane by XCT images.2016-11-09T08:21:27
370-C0023A-99R-2,0.0102.168102.172370-C0023A-99R-2,127.5102.291102.299dull grey green mudstone,with some bioturbation,see last core for more.Rhodochrosite in burrows and some small veinlets of pyrite (in conjugate sets).2016-10-30T19:11:11
370-C0023A-99R-3,0.0102.291102.299370-C0023A-99R-3,117.5102.405102.417dull grey green mudstone,with some bioturbation,see last core for more.Some patchy hydrothermal alteration.2016-10-30T19:08:24
370-C0023A-99R-4,0.0102.405102.417370-C0023A-99R-4,141.0102.542102.558dull grey green mudstone,with some bioturbation,see last core for more.Some hydrothermal alterationObliquely dipping bedding inferred from lamination (99R-4, 41-42cm).Normal faulting with slickenlines (99R-4, 95-118cm).Mineral veins observed along the fault plane by XCT images.2016-11-06T08:26:44
370-C0023A-99R-5,0.0102.542102.558370-C0023A-99R-5,141.0102.678102.699dull grey green mudstone,with some bioturbation,see last core for more.Black pyrite sandy vein similar to 61R-2Normal faulting with slickenlines (99R-5, 58-105cm). Mineral veins observed along the fault plane by XCT images.2016-11-06T08:27:48
370-C0023A-99R-6,0.0102.678102.699370-C0023A-99R-6,119.5102.794102.819dull grey green mudstone,was not seen by VCDmade up XCT2016-10-30T18:25:21
370-C0023A-99R-7,0.0102.794102.819370-C0023A-99R-7,117.0102.907102.936dull grey green mudstone,with some bioturbation,see last core for more.Clay aleteration with clear cystals of sphalertite. SPhalertite contains includsions of yellow clay.72 Grey area consists of smectitie and trace chlorite and calcite.90R Yellow area with smectitie, chlorite and calcite. XRD finds some carbonate fluorapatite99 Grey areas with smectitie, chlorite, calcite, rhodochrosite2016-11-05T19:23:41
370-C0023A-99R-8,0.0102.907102.936370-C0023A-99R-8,102.5103.640103.380dull grey green mudstone,with some bioturbation,see last core for more.Brecciated but disrupted by drilling.Some hydrithermal veining and alteration2016-10-30T18:19:07
370-C0023A-99R-CC,0.0103.640103.380370-C0023A-99R-CC,45.0103.500103.830dull grey green mudstone,with some bioturbation,see last core for more.2016-10-30T18:09:57
370-C0023A-100R-1,0.0103.500103.500370-C0023A-100R-CC,30.0103.675103.675Heavily bioturbated mudstone with significant replacative rhodocrosite and carbonate alteration and mineralisation within burrows. Alteration patch is present 100R-6, 32,39.5 cm. Within the patch there is a gradational changes from grey to yellow.The base of the patch is not sharply defined and barite is present at the base.Healed extensional fracture network (100R-5, 37-45cm). Many instances of oblique bedding.2016-11-09T08:23:56
370-C0023A-100R-1,0.0103.500103.500370-C0023A-100R-1,35.5103.855103.855Bioturbated mudrock2016-10-31T02:54:33
370-C0023A-100R-4,0.0103.262103.262370-C0023A-100R-4,123.0103.385103.3859-10.5, 37-38 Yellowish brown area rich in carbonate2016-10-31T02:58:17
370-C0023A-100R-5,0.0103.385103.385370-C0023A-100R-5,147.0103.532103.532Mudrock and calcareous mudrock32-46 A zone with healed fractures50-50.5 Yellowish brown area, possibly a burrowExtensional healed fracture network (100R-5, 37-45cm).2016-11-06T08:30:30
370-C0023A-100R-6,0.0103.532103.532370-C0023A-100R-6,113.5103.645103.64532-39.5 The mudrock colour gradationally changes from grey to yellow. This interval reacts with 10% HCl. The base is not sharp and barite is present at the base. 40.5-41 Dark band with some white grains which are probably barite60-60.5 Yellowish brown burrow 61-67 A drill biscuitBedding inferred by lamination and cemented boundary are oblique.2016-11-06T08:33:16
370-C0023A-101R-1,0.0104.500104.500370-C0023A-101R-CC,27.0105.500105.825Heavily bioturbated calcareous mudstones with alteration patches containing rhodocrhorsite and replacative calcite. Low pyrite, except for pyritisation along sandy pyrite veins in the style seen in 61R-2.Healed extensional fracture network (101R-7, 31-36cm). Normal faults with slickenfibers (101R-4, 36-39cm; 101R-8, 99-100cm).2016-11-09T08:25:34
370-C0023A-101R-1,0.0104.500104.500370-C0023A-101R-1,10.0104.597104.600dull grey green mudstone,with some bioturbation,see last core for more.2016-10-31T04:36:51
370-C0023A-101R-4,0.0104.289104.297370-C0023A-101R-4,120.5104.406104.418dull grey green mudstone,with some bioturbation,see last core for more.alterarion patch of MnCO3 and sandy pyrite vein similar to 61R-2Normal faulting with slickenlines (101R-4, 36-39cm). Mineral veins observed along the fault plane by XCT images.2016-11-06T08:36:04
370-C0023A-101R-5,0.0104.406104.418370-C0023A-101R-5,140.0104.541104.558dull grey green mudstone,with some bioturbation,see last core for more.Minor Ca mineralisation burrows2016-10-31T06:44:12
370-C0023A-101R-6,0.0104.541104.558370-C0023A-101R-6,108.5104.647104.666dull grey green mudstone,with some bioturbation,see last core for more.2016-10-31T06:44:59
370-C0023A-101R-7,0.0104.647104.666370-C0023A-101R-7,147.0104.789104.813dull grey green mudstone,with some bioturbation,see last core for more.Extensional healed fracture network (101R-7, 31-36cm).Normal faulting with slickenfibers (101R-7, 31-31cm).2016-11-06T08:42:07
370-C0023A-101R-8,0.0104.789104.813370-C0023A-101R-8,105.0104.891104.918Normal faulting with slickenfibers (101R-8, 99-100cm).2016-11-06T08:39:16
370-C0023A-102R-1,0.0105.500105.500370-C0023A-102R-8,72.0105.934105.934Heavily bioturbated mudstones with predominantly replacative pyrite and rhodochrosite wtihin burrows. No alteration patches are present. A small number of pyrite veins in the style seen in 56R, 61R-2, 63R-2 and 87R.2016-11-09T08:27:52
370-C0023A-102R-1,0.0105.500105.500370-C0023A-102R-1,115.0105.165105.165Drill breccia of heavily bioturbated mudstone.Some clasts jigsaw but most do not. There is no fabric or folication imparted to the clasts.79 Burrow with calcite and rhodochrosite2016-11-01T19:57:17
370-C0023A-102R-2,0.0105.165105.165370-C0023A-102R-2,146.0105.311105.311Not seen interprted from X-CT and cuttings2016-10-31T08:46:02
370-C0023A-102R-7,0.0105.735105.735370-C0023A-102R-7,127.0105.862105.862dull grey green mudstone,with some bioturbation,see last core for more.Minor Ca mineralisation burrows2016-10-31T11:15:45
370-C0023A-103R-1,0.0106.500106.500370-C0023A-103R-CC,33.5107.500107.915Heavily bioturbated mudstones with strata bound alteration patches of replacative calcite, rhodochrosite and clay alteration. Baryte veins cut ichnofabrics (burrows) indicating a rough paragenesis. In 103R-8 the gradation form altered burrows tocompletely masked ichnofabrics can be seen . A dark thick metalsulphide vein is present 103R-8, 37 cm.Normal faults with slickenfibers (103R-6, 102-108cm, 108R-7, 2-5cm, and 103R-8, 6-9cm).Mineral vein which cuts one of above normal faulting (103R-6, 102-108cm). Bedding dips moderately.2016-11-09T08:37:26
370-C0023A-103R-1,0.0106.500106.500370-C0023A-103R-1,58.5106.106106.109Heavily bioturbated calcareous mudstones with alteration patches contaiing rhodocrhorsite , baryte and based on weaping of Anhydrite; anhydrite.Replacative calcite and rhdochrosite.Moderately dipping bedding deduced from between mudstone and overlying darker mudstone (103R-1, 10.5-11cm).Moderately dipping bedding deduced from between hydrothermal altered sediment and overlying mudstone (103R-1, 17-18cm, 41-48cm).2016-11-06T10:13:10
370-C0023A-103R-2,0.0106.106106.109370-C0023A-103R-2,82.0106.185106.19117 cm SS finds carbonateModerately dipping bedding infered by lamination (103R-2, 42-45cm).2016-11-06T10:15:53
370-C0023A-103R-6,0.0106.582106.605370-C0023A-103R-6,150.5106.727106.755Normal faulting with slickenlines (103R-6, 102-108cm).Mineral vein which cuts above normal faulting (103R-6, 102-108cm).2016-11-06T10:17:57
370-C0023A-103R-7,0.0106.727106.755370-C0023A-103R-7,149.5106.871106.904Normal faulting with slickenfibers (103R-7, 2-5cm).Moderately dipping bedding deduced from between mudstone and intraformational breccia (103R-7, 128-130cm).2016-11-06T10:21:18
370-C0023A-103R-8,0.0106.871106.904370-C0023A-103R-8,153.5107.178107.58037 A C-rich clayey black band with some pyrite45 cm SS finds carbonate like section 1, but the carbonate is much finerNormal faulting with slickenfibers (103R-7, 6-9cm).2016-11-06T10:22:23
370-C0023A-104R-1,0.0107.500107.500370-C0023A-104R-CC,35.5107.856107.856Heavily bioturbated mudstones with burrows that act as a locus for strata-bound alteration patches of replacative calcite, rhodochrosite and clay alteration (similar to cores 100R to 103R).Notable chlorite alteration within a poorly indurated interval 104R-7,80 to 104R-8,70, that is heavily disturbed by drilling; similar to 99R.Normal faults with slickenlines 104R-1, 19-31cm and slickenfibers 104R-4, 28-30cm.Fracture with mineral veins observed by X-CT image 104R-1, 21-25 cm. Healed fault with a normal faulting sense 104R-2, 118-124cm. Mineral veins 104R-2, 141-141cm.Bedding dips moderately.2016-11-09T08:49:55
370-C0023A-104R-1,0.0107.500107.500370-C0023A-104R-1,56.0107.106107.10620 Change in burrow orientationsTwo normal faulting with slickenlines (104R-1, 19-31cm).Fracture with mineral veins by XCT image (104R-1, 21-25cm).2016-11-06T10:33:34
370-C0023A-104R-2,0.0107.106107.106370-C0023A-104R-2,152.0107.258107.258141-143 White vein with carbonate, barite and quartz143.5 A white clay layerHealed fault showing normal faulting sense (104R-2, 118-124cm).Mineral veins (104R-2, 141-141cm).Moderately dipping bedding infered by lamination of whithe clay layer (104R-2, 143-143cm).2016-11-06T10:37:30
370-C0023A-104R-3,0.0107.258107.258370-C0023A-104R-3,112.0107.370107.37023-26 A grey and white band with a pyritized burrow. The band consists of clayModerately dipping bedding infered by lamination of sand (?) layer (104R-3, 70-72cm).2016-11-06T10:40:47
370-C0023A-104R-4,0.0107.370107.370370-C0023A-104R-4,50.0107.420107.42037-38 Pyritized burrowNormal faulting with slickenfibers (104r-4, 28-30cm).2016-11-06T10:41:43
370-C0023A-104R-7,0.0107.596107.596370-C0023A-104R-7,115.5107.711107.71170.5-112 Calcareous mudrock76-83 Yellow, bioturbated region rich in carbonate112-116 Mudrock2016-10-31T23:51:26
370-C0023A-104R-8,0.0107.711107.711370-C0023A-104R-8,109.5107.820107.820Bioturbated mudrockBurrows have less carbonate content than before2016-10-31T23:54:54
370-C0023A-105R-1,0.0108.500108.500370-C0023A-105R-CC,35.0108.412108.412Heavily bioturbated mudstones and calcareous with burrows that act as a locus for strata-bound alteration patches of replacative calcite, rhodochrosite and clay alteration (similar to cores 104R). Slightly more chlorite alteration than cores 100-103RMineral vein 105R-2, 114-115cm.2016-11-09T08:56:21
370-C0023A-105R-1,0.0108.500108.500370-C0023A-105R-1,116.0108.166108.1664-5 A carbonate-rich burrow42-42.5 Pyrite nodule, 0.5 cm X 1 cm2016-11-01T04:24:07
370-C0023A-105R-2,0.0108.166108.166370-C0023A-105R-2,124.0108.290108.29098-104, 110-112 Yellow, bioturbated, carbonate-rich areas112-113 A brown, carbonate and pyrite-rich burrowMineral vein (105R-2, 114-115cm).2016-11-06T10:44:28
370-C0023A-105R-3,0.0108.290108.290370-C0023A-105R-3,87.0108.377108.37760-63 Carbonate and barite vein, bioturbated2016-11-01T04:31:20
370-C0023A-106R-1,0.0109.500109.500370-C0023A-106R-CC,45.0109.515109.515Heavily bioturbated mudstones with replacative rhodochrosite, calcite and pyrite. Clay mineralisation along ash/tuff layers in 106R-3. Ash is pale white (felsic), not indurated or cemented and is disturbed by drilling.The green-chlorlite bands are similar to that seen in cores 104R to 110R-3).Horizontal mineral veins 106R-1, 66.5-67cm and 121.5-122cm. Bedding is horizontal in the upper part and dips moderately to slightly in the lower part.2016-11-09T09:02:37
370-C0023A-106R-1,0.0109.500109.500370-C0023A-106R-1,138.5109.189109.189Mineral veins with horizontal direction (106R-1, 66.5-67cm and 121.5-122cm).2016-11-06T10:46:48
370-C0023A-106R-2,0.0109.189109.189370-C0023A-106R-2,141.0109.329109.329Horizontal bedding infered from greenish white lamination (106R-2, 15-15cm).2016-11-06T10:51:33
370-C0023A-106R-3,0.0109.329109.329370-C0023A-106R-3,140.5109.470109.470Heavily bioturbated mudstone with mineralisation along ash layers disturbed by drilling (high volcanic ash content and similar green-chlorlite bands to core 110R-3.Slightly or moderately dipping bedding deduced by between mudstone and overlying altered layers (106R-3, 60-63cm and 87-87cm).2016-11-06T10:54:44
370-C0023A-106R-CC,0.0109.470109.470370-C0023A-106R-CC,45.0109.515109.515Yellow altered area consists of barite, pyrite and carbonate fluorapatite2016-11-05T19:36:21
370-C0023A-107R-1,0.0109.850109.850370-C0023A-107R-CC,36.0110.430110.430Bioturbated mudstone with minor calcite and baryte mineralisation within veins. Thin sandstone at base is slightly ashy and contains clasts of orthocalse, and euhedral and spherical quartz and plagioclase that look like igneous crystals.Interpreted as a medium grained volcaniclastic sandstone because of context. Relative to tuffs from higher units it is poorly lithified, and not as ash-rich as volcaniclastic sandstones from 106R-3 and core 110R-4.Mineral vein high dip angle 107R-2, 96-100cm.2016-11-09T09:08:06
370-C0023A-107R-2,0.0109.951109.951370-C0023A-107R-2,109.0110.605110.605Mineral vein with high dipping angle (107R-2, 96-100cm).2016-11-06T11:02:45
370-C0023A-107R-CC,0.0110.394110.394370-C0023A-107R-CC,36.0110.430110.430Mudrock consists of clay minerals and calcite. White patches of barite (from SEM).Micrograph of sandstone band fragment shows orrthocalse, euhedral and spherical quartz and plagioclase.Interpreted as volcanicalstic sediment because of context. Compare to ashy sandstone from 106R-3 and core 110R-4.2016-11-01T08:57:27
370-C0023A-108R-1,0.0110.800110.800370-C0023A-108R-CC,40.5111.308111.308Bioturbated mudstone and altered bioturbated mudstone with patches of anyhdrite mineralisation (cryptocrystalline, white mineral that is dense in X-CT and dissolves in water/acid). Pervasive (e.g. nearly always present and a dominant visualcharacteristic of the rock) green chloritisation present from 108R-3. Thin vitric volcanic ash beds are present; ash is angular and more devitrified than in previous cores and silt-sized euhedral feldspar and spherical quartz is present.Pyrite is uncommon and hard to detect. Small orange flakes are ubiquitous within Pale ash and mudstone horizions, SEM shows they are iron rich and maybe linked to higher magnetic susceptibility within this core.Bedding is horizontal or dips slightly.2016-11-09T09:12:49
370-C0023A-108R-1,0.0110.800110.800370-C0023A-108R-1,133.5110.933110.933carbonate and anhydrite alteartion mostly similar to previous styles21 Green chloritized smectite band with calcite (magnesian).Horizontal bedding deduced by between mudstone and overlying hydrotermal altered sediment (108R-1, 23-23cm).2016-11-06T11:06:46
370-C0023A-108R-3,0.0111.175111.175370-C0023A-108R-3,147.0111.165111.165Green Chloritised mudstone with an ash layer.Pervasive hydrothermal alterationHorizontal bedding deduced by between hydrothermal altered sediment and overlying greenish hydrotermal altered sediment (108R-3, 4-4cm).Horizontal bedding deduced by betweenhydrotermal altered sediment and overlying fine tuff (108R-1, 94-94cm).2016-11-06T11:09:47
370-C0023A-108R-4,0.0111.165111.165370-C0023A-108R-4,103.0111.267111.267Green Chloritised mdustone with altered volcanic sandstone that contains fine orange accilular needles.Green in ash layers is assumed to be bentonite.Some red minerals containing iron and titanium associated with the volcanic sandstone.Horizontal bedding deduced by between hydrothermal altered sediment and overlying greenish hydrotermal altered sediment (108R-4, 65-66cm).2016-11-06T11:16:33
370-C0023A-108R-CC,0.0111.267111.267370-C0023A-108R-CC,40.5111.308111.30825-25.5 An iron sulfide band with some calcite grains, some manganese mineralsSlightly dipping bedding deduced by between hydrothermal altered sediment and overlying greenish hydrotermal altered sediment (108R-CC, 8-9cm and 23-24cm).2016-11-06T11:17:58
370-C0023A-109R-1,0.0111.800111.800370-C0023A-109R-CC,58.0112.995112.995Chloritised bioturbated mudstone with patches of anhydrite mineralisation (dense in X-CT and dissolves in water/acid). Thin vitric volcanic ash beds are present. The poorly consolidated ash is angular partially devitrified),and has small silt-sized euhedral feldspar and spherical quartz. Pyrite is uncommon and hard to detect, but small flakes of iron rich red clay are commonly disseminated throughout mud and pale volcanic ash.Original ichnofabrics visible in 109R-1, 116-122cm. Mineral vein with high angle of dip (109R-2, 27-34cm).Bedding is dips moderately.2016-11-09T10:12:32
370-C0023A-109R-1,0.0111.800111.800370-C0023A-109R-1,140.0111.940111.940Green chloritised mudrock with some carbonate and vitric glass108-109 A calcite noduleModerately dipping bedding infered from pyritic sand layer (109R-1, 116-118cm).2016-11-06T11:22:17
370-C0023A-109R-2,0.0111.940111.940370-C0023A-109R-2,101.5112.415112.415Green chloritised ,udrock with some anhydrite vening (dense in X-CT dissolves in HClMineral vein with high dipping angle (109R-2, 27-34cm).Moderately dipping bedding infered from coarser grain layer (109R-2, 53-55cm).2016-11-06T11:25:34
370-C0023A-110R-1,0.0112.100112.100370-C0023A-110R-CC,34.0112.689112.689Reddened interval of calcareous mudstone (XRD confirms a relatively high proportion of goethite and hematite to be present). Green intervals fizz sparsely except when shells are present (XRD confirms high chlorite concentration).Green intervals arecut by calcite veins. There is an uneven contact at base between mudstone and basalt that does not evidence thermal alteration - enclaves of mud within the basalt are not baked. The mud overlies clasts of pale grey altered basalt andpale grey volcanic glass. Thin section analsysis shows the basalt and glasses to contain acicular and bladed plagioclase as well euhedrdal plagioclase phenocrysts. Within basalt clay-alteration is common and both replaces olivine and amphiboles,as well as fills vesicles. Chlorite confirmed in thin section. The exterior of basalt clasts is rounded and some have hardened rims of glass or calcite.Mineral veins with a slight to moderate dip (110R-1, 5-46cm; 110R-4, 58-59cm; 110R-cc, 7-34cm).Several normal faults with slickenlines or slickenfibers (110R-1, 11-23cm; 110R-2, 30-32cm; 110R-4, 30-33cm and 55-56cm). Bedding dips slightly or moderately.2016-11-09T10:12:02
370-C0023A-110R-1,0.0112.100112.100370-C0023A-110R-1,127.5112.228112.228Bioturbated mudstone with calcite veining and minro alterationMineral veins with slightly to moderately dipping angle (110R-1, 5-11cm and 44-46cm).Several normal faulting with slickenfibers (110R-1, 11-23cm).Slightly dipping bedding infered from lamination (110R-124-32cm).2016-11-06T11:31:33
370-C0023A-110R-2,0.0112.228112.228370-C0023A-110R-2,143.5112.371112.371indurated bioturbated mudstone with pyrite and sst veins like 61R-2 and clacite vein.Normal faulting with slickenfibers (110R-2, 30-32cm).Slightly dipping bedding infered from dark color lamination (110R-2, 18-21cm).2016-11-06T11:33:24
370-C0023A-110R-3,0.0112.371112.371370-C0023A-110R-3,102.0112.473112.473indurated biotrubated mudstone with thing volcanics sandstones (contain mudclasts). sst's have sole marks, hints of ripples and green laminations (also pummice clasts, plagioclase and partically devitrified ash).Slightly dipping bedding deduced by between mudstone and overlying volcaniclastic sandstone (110R-3, 88-94cm).2016-11-06T11:36:06
370-C0023A-110R-4,0.0112.473112.473370-C0023A-110R-4,148.5112.621112.621Redened interval of calcareous mudstones,. Green intervals fizz sparsley aside from shells.113-120.5 fragmentrs of bassalt and unlatered mud. Relaive to Bassalt in 110R-CC Basalt is less altered (e.g. round oxide inclusions are uncommon.At base a fine grained plagioclase rich ingenous rock with flake and petal textured crsytals of felspar. Inclusion of glass and amphibole many of which are aletered to green, red and yellow clay.Confirm SEM and TS.XRD on the red intervals find hematitie, goethite, magnetitie, calcite, illite and quartz.Normal faulting with slickenlines (110R-4, 30-33cm and 55-56cm).Mineral vein with moderately dipping angle (110R-4, 58-59cm).Slightly dipping bedding deduced by between reddish calcareous mudstone and overlying greenish hydrothermal altered sediment layer (110R-4, 59-60cm, 79-81cm and 106-107cm).2016-11-06T11:42:49
370-C0023A-110R-CC,0.0112.654112.654370-C0023A-110R-CC,34.0112.689112.689Description vbased on polished block and reflected light microscope only (confirm by TS). Bassalt with fine grained ground mass of euhedral pyroxenes-replaced by opaque minerals, and short accicular plagioclase (< 0.1 mm),Larger 1mm phenocyrsts of Plagioclase and amphiboles (organge-brown) and olivines are subhedral replaced by green clay. Exterior is rounded and has hardened black rim (glass??) and calcite.Red-coloured areas consist of iron minerals.Mineral veins with high dipping angle (110R-cc, 7-12cm and 23-34cm).Larger 1mm phenocyrsts of Plagioclase and amphiboles (organge-brown) and olivines are subhedral replaced by green clay. Exterior is rounded and has hardened black rim (glass??) and calcite.Red-coloured areas consist of iron minerals.Mineral veins with high dipping angle (110R-cc, 7-12cm and 23-34cm).2016-11-08T07:52:19
370-C0023A-111R-1,0.0117.300117.300370-C0023A-111R-CC,48.0117.400117.400Hyaloclastite brecciated by drilling. Three main components: 1) Green glass with calcite psuedomoprhing after plagioclase. Some glass-fragments have other enclaves of other components trapped within (typically plagioclase).2) A single Feldspathic basalt piece that has a very thick (>4 cm) glassy exterior and can be interpreted as a pillow basalt. Plagioclase crystals are acicular blades and needles similar to 110R-4. Phenocyrsts present in both basalt and glass.3) Basalt fragments some of which have calcite on their exterior (like 110R-CC). Phenocrysts inlcude euhedral plagioclase and chlorite psuedomorphing after olivine.Ground mass includes accicular plagioclase, brown possibly microcrystalline hornblende and pyroxene. Mineral veins along surfaces of clasts (111R-cc, 39-41cm).2016-11-09T10:13:04
370-C0023A-111R-1,0.0117.300117.300370-C0023A-111R-1,52.0117.352117.352Hyaloclastite brecciated by drilling with three components. Green glass with calcite psuedomoprhing after plagioclase.Some glass fragments have other enclaves of other components trapped within (typically plagioclase).A single Feldspathic basalt piece with very thick (>4 cm) glassy exterior. Plagiocalse crystals are acciular needles similar to 110R-4. Glass penetrates into interior.At the base are basalt fragments some of which have calcite on exterior (like 110R-CC). Phenocrysts inlcude euhedral plagioclase and some chlorite psuedomorphing after olivine.Ground mass includes accicular plagioclase, brown possibly microcyrstalline hornblende and pyroxene.Section to SEM and thin section.XRD on the basalt at 18-20 and 30-32 finds anorthite, olivine (fayalite), ilmenite, actinolite, hornblende, magnetite, ulvospinel and chlorite; on the greenish, glassy part at 4-5(COMGAS residues) finds abundant smectite, some calcite, pyroxene, olivine (fayalite) and anorthite.SEM observed hornblende, plagioclase and carbonate.2016-11-08T07:51:01
370-C0023A-111R-CC,0.0117.352117.352370-C0023A-111R-CC,48.0117.400117.400As for 111R-1.White clay at base is mixture of ground green glass and calcite. Small clast of drill breccia i middle.Mineral veins along surfaces of clasts (111R-cc, 39-41cm).2016-11-06T11:50:38
370-C0023A-112R-1,0.0117.650117.650370-C0023A-112R-1,50.0117.700117.700Basalt fragments some of which have calcite veins and red rims within. Ground mass includes acicular plagioclase, with microcrystalline brown hornblende and pyroxene. Less phenocrysts than 110R-1. SEM confirmed the presence of ferrous mineral phases.Mineral veins along surfaces of clasts (112R-1, 2-16cm).2016-11-09T10:08:38
370-C0023A-112R-1,0.0117.650117.650370-C0023A-112R-1,50.0117.700117.700Calcium-rich basalt with plagioclase and red, higher-density rings consist of hematite and goethite.Basalt composition is similar to that in 111R.Mineral veins along surfaces of clasts (112R-1, 2-16cm).2016-11-06T11:52:49