Chester, Frederick; Mori, James J; Toczko, Sean; Eguchi, Nobuhisa; Expedition 343/343T Scientists (2013): Visual core description (VCD) from IODP Hole 343-C0019E [dataset]. SIO7 Data Center, J-CORES Database; Ocean Drilling Program, Center for Deep Earth Exploration (JAMSTEC), PANGAEA, https://doi.org/10.1594/PANGAEA.817536
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Related to:
Chester, Frederick; Mori, James J; Toczko, Sean; Eguchi, Nobuhisa; Expedition 343/343T Scientists (2012): Integrated Ocean Drilling Program Expedition 343/343T Preliminary Report. IODP Preliminary Report, Integrated Ocean Drilling Program, https://doi.org/10.2204/iodp.pr.343343T.2012
Source:
IODP/CDEX (2012): SIO7 Data Center, J-CORES Database. Ocean Drilling Program, Center for Deep Earth Exploration, Japan Agency for Marine-Earth Science and Technology, Yokohama Kanagawa 236-0001, JAPAN, https://www.jamstec.go.jp/sio7/j-cores.data/315/C0001H/
Project(s):
Coverage:
Latitude: 37.938905 * Longitude: 143.913473
Date/Time Start: 2012-05-11T00:00:00 * Date/Time End: 2012-05-24T00:00:00
Minimum DEPTH, sediment/rock: 176.50 m * Maximum DEPTH, sediment/rock: 836.50 m
Event(s):
343-C0019E * Latitude: 37.938905 * Longitude: 143.913473 * Date/Time Start: 2012-05-11T00:00:00 * Date/Time End: 2012-05-24T00:00:00 * Elevation: -6887.5 m * Recovery: 53.31 m * Campaign: Exp343 (Japan Trench Fast Drilling Project) * Basis: Chikyu * Method/Device: Drilling/drill rig (DRILL) * Comment: 21 cores; 137 m cored; 43 % recovered; 707.5 m drilled; 844.5 m penetrated
Comment:
Geocode = [m CSF-A] Top Core depth (below sea floor)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Expedition 343/343T Scientists | DSDP/ODP/IODP sample designation | Sample top | |
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 3 | Depth, top/min | Depth top | m | Expedition 343/343T Scientists | [m CSF-B] Top Core depth (below sea floor) | |
| 4 | Sample code/label 2 | Sample label 2 | Expedition 343/343T Scientists | DSDP/ODP/IODP sample designation | Sample bottom | |
| 5 | Depth, bottom/max | Depth bot | m | Expedition 343/343T Scientists | [m CSF-A] Bottom Core depth (below sea floor) | |
| 6 | Depth, bottom/max | Depth bot | m | Expedition 343/343T Scientists | [m CSF-B] Bottom Core depth (below sea floor) | |
| 7 | Main Lithology | Main lith | Expedition 343/343T Scientists | Visual description | Sedimentological comment on Core | |
| 8 | Main Lithology | Main lith | Expedition 343/343T Scientists | Visual description | Continued | |
| 9 | Main Lithology | Main lith | Expedition 343/343T Scientists | Visual description | Continued | |
| 10 | Main Lithology | Main lith | Expedition 343/343T Scientists | Visual description | Continued | |
| 11 | Main Lithology | Main lith | Expedition 343/343T Scientists | Visual description | Continued | |
| 12 | Main Lithology | Main lith | Expedition 343/343T Scientists | Visual description | Continued | |
| 13 | Lithology/composition/facies | Lithology | Expedition 343/343T Scientists | Visual description | Sedimentological comment on Section | |
| 14 | Lithology/composition/facies | Lithology | Expedition 343/343T Scientists | Visual description | Continued | |
| 15 | Lithology/composition/facies | Lithology | Expedition 343/343T Scientists | Visual description | Continued | |
| 16 | Time Stamp | Time Stamp | Expedition 343/343T Scientists | Visual description | Continued | |
| 17 | Main Lithology | Main lith | Expedition 343/343T Scientists | Visual description | Geological comment on Core | |
| 18 | Main Lithology | Main lith | Expedition 343/343T Scientists | Visual description | Continued | |
| 19 | Time Stamp | Time Stamp | Expedition 343/343T Scientists |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
212 data points
Data
| 1 Sample label (Sample top, DSDP/ODP/IODP sam...) | 2 Depth sed [m] | 3 Depth top [m] ([m CSF-B] Top Core depth (bel...) | 4 Sample label 2 (Sample bottom, DSDP/ODP/IODP ...) | 5 Depth bot [m] ([m CSF-A] Bottom Core depth (...) | 6 Depth bot [m] ([m CSF-B] Bottom Core depth (...) | 7 Main lith (Sedimentological comment on C...) | 8 Main lith (Continued, Visual description) | 9 Main lith (Continued, Visual description) | 10 Main lith (Continued, Visual description) | 11 Main lith (Continued, Visual description) | 12 Main lith (Continued, Visual description) | 13 Lithology (Sedimentological comment on S...) | 14 Lithology (Continued, Visual description) | 15 Lithology (Continued, Visual description) | 16 Time Stamp (Continued, Visual description) | 17 Main lith (Geological comment on Core, V...) | 18 Main lith (Continued, Visual description) | 19 Time Stamp |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 343-C0019E-1R-1,0.0 | 176.50 | 176.50 | 343-C0019E-1R-CC,25.0 | 185.235 | 185.235 | Siliceous mud(stone): Medium greyish olive clay to silt-sized siliciclastic material with minor diatoms, sponge spicules, and ash shards. Contains sporadic (<<5%) subrounded pumice clasts up to 4mm diameter, sometimes concentrated in cm-thick lenses. | There are darker layers, laminae (that may be laterally discontinuous) and patches, ranging from olive brown to dark grey. Contacts between the various colours are rarely planar and may undulate up to 1cm perpendicular to main bedding. | Ash (tuff):Light grey to light olive grey ash. Contains >60% volcaniclastics from smear slide observations. May form cm-thick planar layers or discontinuous pods with interfingering boundaries with surrounding siliceous mud. | 2012-05-15T22:59:57 | |||||||||
| 343-C0019E-1R-1,0.0 | 176.50 | 176.50 | 343-C0019E-1R-1,140.0 | 177.900 | 177.900 | 0.0 - 38.0cm: Bedding has consistent orientation. 38.0-75.0cm Bedding has consistent orientation. 75.0-140.0cm: Bedding has consistent orientation. | 2012-05-14T21:06:20 | |||||||||||
| 343-C0019E-2R-1,0.0 | 648.00 | 648.00 | 343-C0019E-2R-CC,15.5 | 651.635 | 651.635 | Mixed drilling breccia: Completeley brecciated and disaggregated. Broken into sub mm to ~1 cm sized, angular to sub-rounded fragments. Larger fragments are sorted into axis of core. Fragments are in 4 compositions: | Dark gray (Munsell color 10G-3/1)silty with black slivers 3mm long, <<1 mm thick. fragments tends to be sub-angular to sub-rounded; medium gray (5B-7/1) sub-angular fragments; brown (2.5Y-4/4) angular fragments; pale gray (N-8/0), | carbonate (verified with HCl), fragments form angular wafers. All show a range of size distributions, except for the carbonate veins which are mm thickness. Two lithologic units identified in coherant core sections: Ashy mudstone: | Medium gray (5B-5/1) ashy mud(stone). Silt and clay grains with an overall speckled grey/black appearance. Mottled with patches of paler color where black grains are missing (from bioturbation). | Contains 1-2 mm thick black, silty (organic?), discontinuous laminations. Red-Brown Silty Terrigenous clay(stone):Terrigenous component dominated (>70%), clay-rich, greyish-brown mudstone. | Fossiliferous, ultra-fine grained (mostly < 60 micron) with patchy calcite cement (HCl). Archive half contains one macrofossil. | 2012-05-17T05:59:23 | ||||||
| 343-C0019E-2R-2,0.0 | 649.41 | 649.41 | 343-C0019E-2R-2,141.0 | 650.820 | 650.820 | Section completeley brecciated and disaggregated. Broken into sub mm to ~1 cm sized, angular to sub-rounded fragments. Larger fragments are sorted into axis of core. | Fragments are in 4 compositions: dark gray (Munsell color 10G-3/1)silty with black slivers 3mm long, <<1 mm thick. Fragments tends to be sub-angular to sub-rounded; medium gray (5B-7/1) sub-angular fragments; | Brown (2.5Y-4/4) angular fragments; pale gray (N-8/0), carbonate (verified with HCl), fragments form angular wafers. All show a range of size distributions, except for the carbonate veins which are mm thickness. | 2012-05-16T23:53:50 | |||||||||
| 343-C0019E-2R-3,0.0 | 650.82 | 650.82 | 343-C0019E-2R-3,66.0 | 651.480 | 651.480 | Section completeley brecciated and disaggregated. Broken into sub mm to ~1 cm sized, angular to sub-rounded fragments. | Larger fragments are sorted into axis of core. Fragments are in 4 compositions: dark gray (Munsell color 10G-3/1)silty with black slivers 3mm long, <<1 mm thick. fragments tends to be sub-angular to sub-rounded; Medium gray (5B-7/1) sub-angular fragments | brown (2.5Y-4/4) angular fragments; pale gray (N-8/0), carbonate (verified with HCl), fragments form angular wafers. All show a range of size distributions, except for the carbonate veins which are mm thickness. | 2012-05-22T18:40:31 | |||||||||
| 343-C0019E-3R-1,0.0 | 653.00 | 653.00 | 343-C0019E-3R-CC,5.5 | 659.650 | 659.650 | Majority of core consists of fragemented,drilling induced breccia.Rock fragements in breccia consist of:a medium to dark grey mudstone,a light gray silty mudstone,a red-brown silty clay, and a brown to red-brown silty clay with coarser lithic fragments. | Two intact rock fragemtns were preserved in section 2. Lithology 1: medium grey mud(stone), rich in terrigenous material, ~75% siliclastic grains and ~24% volcanic grains, and trace silaceous microfossils. | Lithology 2: grey mud(stone), dominantly terrigenous with high clay content, ~65% siliclastic grains, ~35% volcanic grains, and minor silaceous microfossils. | 2012-05-17T12:10:20 | |||||||||
| 343-C0019E-3R-2,0.0 | 654.40 | 654.40 | 343-C0019E-3R-2,141.0 | 655.810 | 655.810 | Fragment 1: 44-50 cm: medium to dark grey terrigenous mudstone with lighter brown-grey mottling trhoughout. Contains ~24% volcanic grains and trace silaceous microfossils. | Fragment 2: 57-61 cm: medium to light grey-brown, clay-rich, terrigenous, mudstone with coarse silty grains and occasional lithic fragments. 2-5cm bedding is loosely defined by alternating layers of coarse and ifnd silts and mud. | Contains ~34% volcanic grains and minor silaceous microfossils. | 2012-05-17T12:05:48 | |||||||||
| 343-C0019E-4R-1,0.0 | 688.50 | 688.50 | 343-C0019E-4R-CC,15.5 | 690.590 | 690.590 | Black ashy mudstone: Dark gray to black, ultra-fine grained, laminated mudstone with dominant volcaniclastic component. Grain size is predominantly clay-sized, with scattered black silt-sizesd speckles. | Bedding is defined by medium gray to black, 1-4 mm thick laminations (occasionally discontinuous). Rare elliptical, black, smudgy patches and sub-mm scale pale gray mottling may be worm burrows. | Terrigenous component ~55% (dominated by clay), volcaniclastic ~44% (including pumice and glass fragments) and 1% biogenic fragments. Minor lithology is pale greenish-gray claystone containing >90% clay sized terrigenous particles. | Forms few cm thick beds. | 2012-05-18T02:13:29 | ||||||||
| 343-C0019E-5R-1,0.0 | 696.00 | 696.00 | 343-C0019E-5R-CC,26.0 | 700.245 | 700.245 | Major unit: Inerbedded (cm or greater scale) dark grey mudstone with dark lamiae, ashy mudstone, and silty mudtone. Dark gray mudstone bedding defined by mm scale, wavy and anastomosing, dark black (organic?) compositional banding. | Contains ~80% siliclastic grains and ~15% ash. Dark grey mudstone is interbedded with light green-grey, ashy, silty-sandstones with dominant volcaniclastic component (~40%), particularly at the uppermost interval (section 1, 1-55 cm). | Minor interbeds of claystone contain 70% siliclastic grains and 29% volcanic grains. Silaceous fossil fragments occur in trace amounts throught section with interbeds containing up to 15% silaceous material. | Unit contains trace pumice in isolated beds, and minor pyrite concretions often found in association with dark lenses. Bedding in all lithologies commonly occur as anastamosing, boudined layers or losenges of variable thickness. | Thin, planar, coherant laminated beds are present, but less common. | 2012-05-19T12:14:29 | |||||||
| 343-C0019E-6R-1,0.0 | 704.00 | 704.00 | 343-C0019E-6R-CC,20.5 | 706.355 | 706.355 | Mudstone: Very dark gray mudstone with black, few mm-scale laminae. Wavy and anastomosing banding defines bedding through most of the section. Small intervals display thin, planar, laminar bedding of interbedded brown-gray and dark horizons. | Rare ash layers and horizons containing isolated pumice clasts. | 2012-05-18T20:01:13 | ||||||||||
| 343-C0019E-7R-1,0.0 | 713.00 | 713.00 | 343-C0019E-7R-CC,15.0 | 715.750 | 715.750 | Major lihology consits of interbedded dark grey mudstone with black laminations, ashy silty mudstone, and olive-grey mudstone. The dominant lihology is a dark grey mudstone consists of ~70% siliclastic grains. | 30% volcanic grains, and trace silaceous microfossils. Grey mudstone contains thin layers of dark grey to black (possibly organic rich) material (66% siliclastic grains, 33% volcanic and trace pelagic grains). | Bedding is defined by interlayers of dark grey mudstone and is often wavy or flaser, with lateral thickness variations in the bedding plane. Dark grey mudstone contains interbeds of olive grey-brown mudstone. | These horizons tend to be rich in clay relative to surrounding layers. Interbeds of silty-sand/ sandy-silt are present predominantly within the dark grey ominany lithology. These layers contain ~85% siliclastic grains. | 15% volcanic grains and trace silaceous fossils. Discontinusous bedding and lenses of clay material may be the result of soft-sediment layer parallel shearing. | 2012-05-19T16:51:36 | Olive green mudstone with irregular dark layers and pale green layers defining a general planar bedding. Strongly mottled, likely bioturbation. Locally very finely laminated with silty layers. Pyrite cementation observed within burrows and black layers. | 2012-05-18T23:46:57 | |||||
| 343-C0019E-8R-1,0.0 | 719.00 | 719.00 | 343-C0019E-8R-CC,5.5 | 722.930 | 722.930 | Major lithologies: Dark grey mudstone interbedded with light green mudstone, dark (organic-rich)layers and silty mudstones. Dark grey mudstone contains 90% siliclastic grains and 10% volcanic grains. | Dark (organic?) layers occur as flaser bedding, wavy laminae, and boudined lenses and losenges. Some conain pyrite concretions. Thin, planar, coherant laminated beds are present, but less common. | Green-grey to light borwn clay-rich mudstone is a secondary dominant lithology. Unit contains 90% siliclastic grains and 10% volcanic grains, with 70% of the material in the clay grain size fraction. | Dark grey mudstone and grey-green mudstone litholgies are interbeddd at the decimeter scale. Laminea and >cm thick beds of coarse silty mudstone and siltstone containing couspicious quartz and feldspar are present throught core. | Sporadic concretions (few mm-1 cm diameter) and dark patches (organic materials, few mm) are present. All units contain trace to 15% silaceous fossils and fossil fragments. | 2012-05-19T16:32:12 | |||||||
| 343-C0019E-9R-1,0.0 | 724.50 | 724.50 | 343-C0019E-9R-CC,5.0 | 725.165 | 725.165 | Major lithology: Dark grey-green mudstone (70% siliclastic and 25% volcanic) containing dark (organic?) lenses and layers. Upper portion of unit (17-27 cm) is dominated by a coarser grain-sized silty mudstone with siltstone laminae. | Bioturbation present in clay rich intervals. Contains few mm-thick dark seams and some pyrite concretions (~1cm diameter). Core constains the grey mudstone and ashy-silty mudstone lithologies of cores 7 and 8. | 2012-05-19T13:11:39 | ||||||||||
| 343-C0019E-10R-1,0.0 | 770.00 | 770.00 | 343-C0019E-10R-CC,35.5 | 772.350 | 772.350 | Mudstone: Same as previous. Contains sparse laminae of silty and sandy horizons with associated black bands. Interval 10R-1, 0.2-0.5. Dark gray to gray, mudstone. Differentiated by dark, elliptical spots with long axes aligned to define a planar fabric. | May be associated with pyritized burrows. | 2012-05-20T17:43:04 | ||||||||||
| 343-C0019E-11R-CC,0.0 | 780.50 | 780.50 | 343-C0019E-11R-CC,13.5 | 780.635 | 780.635 | Drilling breccia containing pieces of the following: Blue gray siliceous mudstone: Pieces 1 (1-3cm) and 3 (7-10 cm) Silty mudstone (70% siliclastic) with abundant biogenic fragments including diatoms and sponge spicules (20-33%). | Grain size is silty or smaller (70% clay). Faint laminations are defined by <<1 mm thin whispy laminations and bright X-CT numbers compared to predominant values. | Piece #1 contains brecciated, sub-angular fragments of olive-brown-grey mudstone in a dark grey matrix. Gray Siliceous mudstone: Pieces 2 (3-6 cm) and 4 (10-13 cm). | Homogeneous, gray siliceous mudstone wiht >70% siliclastic grains, ~15% volcanic grains, and <10% silaceous. Represented by a few biscuits in C11R. Contains few indications of bedding and no observed laminations. Mottled bedding. | Numerous worm burrows are <0.7 mm wide, dispersed and follow sinuous random tracks. No observed deformation in X-CT. | 2012-05-22T22:50:41 | |||||||
| 343-C0019E-12R-1,0.0 | 786.00 | 786.00 | 343-C0019E-12R-CC,13.0 | 787.870 | 787.870 | Dominant lithology: dark grey green homogenous mudstone, with dominant (>90%) siliclastic grains, minor silaceous fossil fragments (>10%) and trace ash (1%). Mudstone is commonly biotrubed and mottled. | Mustone is frequently interbedded with mm-cm scale silty laminae, with dominant (98%) siliclastic grains with abundant quartz and feldspar fragments, and trace ash and silcaceous grains. | 2012-05-20T12:45:33 | ||||||||||
| 343-C0019E-15R-1,0.0 | 816.50 | 816.50 | 343-C0019E-15R-1,121.0 | 817.710 | 817.710 | Note: 15R-1 has ~25% ash, which is distinctly greater than 14R and 16R but is not enough to warrant an 'ashy mudstone' classification. | 2012-05-22T23:10:57 | |||||||||||
| 343-C0019E-17R-1,0.0 | 821.50 | 821.50 | 343-C0019E-17R-1,115.0 | 822.650 | 822.650 | Three different materials: a brown (clayey) lithology, a dark gray to black lithology and a greenish gray, homogeneous mudstone. Mudstone is only present in one 13.5 cm long biscuit. | The brown material includes clasts of the black material, and vice-versa. Within each of these materials, clasts have sharp edges. One rim of brown material was observed surrounding a black phacoid. | The boundaries between predominantly brown and predominantly black intervals are sharp. A sharp contact also separates more and less strongly deformed rock within the black material-dominated interval. | 2012-05-23T21:55:34 | |||||||||
| 343-C0019E-18R-1,0.0 | 824.00 | 824.00 | 343-C0019E-18R-CC,18.0 | 825.675 | 825.675 | Dominant lithology: Brown silty clayey mudstone. Composed of >85 % siliclastic, 5-10% volcaniclastic, 5% silaceous microfossils grain sizes of 50-65% clay, 30-45% silt and 3% sand. | Brown silty clayey mudstone occurs as elongate lenses in a discontinuous matrix of darker brown, silty mudstone with abundant black silt grains (manganese - see smear slide in core 19 at 59 cm in section 2). | Dark silty horizons are commonly concentrated in biotrubated, laterally discontinuous blebs. Grades from a more clay-dominant lithology at the top of core 18 to a siltier lithology at the base. | Contains occasional pods of and lenses of white granular ash that may be concentrated in bioturbated horizons. (see smear slide in coere 19 section 1 at 33 cm). | Bedding is not well defined but is loosely identifiable by aligned lenses of various mudstone lithologies, likely the result of both bioturbation and moderate shear. unit is not intensely defomred but contaions local zones of shear. | Brobable scaley fabric developed in ~20cm wide intervals | 2012-05-23T07:56:44 | ||||||
| 343-C0019E-19R-1,0.0 | 826.50 | 826.50 | 343-C0019E-19R-CC,24.0 | 829.475 | 829.475 | Dominant lithology: Brown silty clayey mudstone - same as in core 18. Silty mudstone occurs as elongate lenses in a discontinuous matrix of darker brown, silty mudstone with abundant black silt grains (manganese - see smear slide at 59 cm in section 2). | Dark silty horizons are commonly concentrated in biotrubated discontinuous blebs. decimeter scale graditional sequences from more clay-rich mustone at top of beds to siltier Mn rich beds at base. | Bases of dark silty beds often have abrupt transitions to clay-rich mudstone below. Commonly contains discontinuous pods and lenses of white granular ash that may be concentrated in bioturbated horizons. (see smear slide in section 1 at 33 cm). | Bedding is not well defined but is loosely identifiable by aligned lenses of various mudstone lithologies, likely the result of both bioturbation and moderate shear. Unit is not intensely defomred but contaions local zones of shear. | 2012-05-23T07:58:11 | ||||||||
| 343-C0019E-20R-1,0.0 | 831.00 | 831.00 | 343-C0019E-20R-CC,10.5 | 833.605 | 833.605 | Dominant lithologies: Brown silty clayey mudstone, as observed in cores 18 and 19, is present the upper 190cm of core 20. Bedding is lossely defines by elongate, discontinuous lenses of brown silty mudstone and dark (Mn rich) silty mudstone. | Occasional pods of white, grainy ash, preferrentially included in burrows and bioturbated intervals. Bottom 65 cm consists of laminar, yellow brown and dark brown clay, with occasional pink, red-brown and white laminae. | Unit consists of >80% siliclastic grains, with <10% volcanic grains and trace to <10% silaceous microfossils. More than 75% of the material falls in the clay grain size fraction. | Claystone contains minor amounts of pyrite or manganese, and possible crystobalite. | The base of the claystone recovered contains fragments of yellow-brown chert, as observed in core 21. | 2012-05-23T08:59:45 | |||||||
| 343-C0019E-21R-1,0.0 | 836.50 | 836.50 | 343-C0019E-21R-CC,18.0 | 836.990 | 836.990 | Entire core consists of rock fragemtns - no intact core recovered. Upper 15 cm consists of fragments of mudstone from cores 18-20 and possibly from cores above core 17. | These are interpreted to be fragements that fell into the base of the hole are are not interpreted to be in place. Remainder of core consists of fragments of yellow-brown and chocolate brown laminar chert. | Yellow-brown chert: <mm to mm scale laminae of light yellow-brown (Hue 5y 7/2) and dark yellow-brown (Hue 5Y 6/3) chert and occasional cm bands of translucent (Hue 10Yr 5/6) chert. | These fragemnts are often coated in clay of the same color, as is found at the base of core 20 section 2; dark brown chert (Hue 2.5Y 3/1) with red-brown laminae (7.5 Yr 3/4). | Same appearance as chocolate brown mudstone of core 20 section 2. No tectonic deformation features observed in any of the fragments. | 2012-05-23T07:41:35 |