/* DATA DESCRIPTION: Citation: van der Meer, Jaap (2000): Lithology description, textural and structural observations, and indications for ground ice of sediment core CRP-2 (Table 1-4). PANGAEA, https://doi.org/10.1594/PANGAEA.451856, Supplement to: van der Meer, J (2000): Microscopic observations on the frist 300 metres of CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(3), 339-348, hdl:10013/epic.28271.d001 Abstract: From the upper 300 m of CRP-2/2A, twenty-six samples of diamicts and deformation structures have been thin sectioned. These have been analysed for texture, structure, diagenesis and plasmic fabric. The combination of certain microstructures (e.g. turbate and linear) and plasmic fabric development is indicative of grounded ice. Clear evidence for two grounded ice events (three samples) was found in the upper Oligocene part of the core. The interpretation of ten more samples is less certain, but as for CRP-1, is taken to point to grounded ice as well. There is a strong correlation between these indications for grounded ice and the basal part of cycles in the sequence stratigraphy. Project(s): Cape Roberts Project (CRP) (URI: https://en.wikipedia.org/wiki/Cape_Roberts_Project) Coverage: LATITUDE: -77.005982 * LONGITUDE: 163.719450 DATE/TIME START: 1998-10-01T00:00:00 * DATE/TIME END: 1998-11-25T14:20:00 MINIMUM DEPTH, sediment/rock: 13.660 m * MAXIMUM DEPTH, sediment/rock: 300.050 m Event(s): CRP-2 (14.2 km at 096° true from Cape Roberts) * LATITUDE: -77.005983 * LONGITUDE: 163.719450 * DATE/TIME: 1998-10-01T00:00:00 * ELEVATION: -177.9 m * Recovery: 57.42 m * LOCATION: off Cape Roberts, Ross Sea, Antarctica * CAMPAIGN: CRP-2 (URI: hdl:10013/epic.28290.d001) * BASIS: Sampling/drilling from ice * METHOD/DEVICE: Core wireline system (CWS) * COMMENT: 921 m at 284° from CRP-1. Sea-ice thickness: 2.0 m (1 Oct) to 2.2 m (23 Nov). Sea riser embedded to 13.03 mbsf. Lateral ice movement: 9.87 m to east from 17 Oct to 23 Nov. HQ core to 199.31 mbsf. NQ core to 624.15 mbsf CRP-2A (14.2 km at 096° true from Cape Roberts) * LATITUDE: -77.005980 * LONGITUDE: 163.719450 * DATE/TIME START: 1998-10-16T07:30:00 * DATE/TIME END: 1998-11-25T14:20:00 * ELEVATION: -177.9 m * Recovery: 624 m * LOCATION: off Cape Roberts, Ross Sea, Antarctica * CAMPAIGN: CRP-2 (URI: hdl:10013/epic.28290.d001) * BASIS: Sampling/drilling from ice * METHOD/DEVICE: Core wireline system (CWS) * COMMENT: 921 m at 284° from CRP-1. Sea-ice thickness: 2.0 m (1 Oct) to 2.2 m (23 Nov). Sea riser embedded to 13.03 mbsf. Lateral ice movement: 9.87 m to east from 17 Oct to 23 Nov. HQ core to 199.31 mbsf. NQ core to 624.15 mbsf. 13.03 to 45.97 mbsf, 11.29 m (34%) partially following CRP-2. 45.07 to 624.15 mbsf, 548.67 m (95%) new hole. Deepest core-lithology: hard sandy siltstone. Deepest core-age: earliest Oligocene (ca. 33 Ma on diatoms, nannofossils and dinoflagellates) Comment: x = present Parameter(s): Event label (Event) DEPTH, sediment/rock [m] (Depth sed) * GEOCODE Depth, top/min [m] (Depth top) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) Depth, bottom/max [m] (Depth bot) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) Sample code/label (Sample label) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) Lithologic unit/sequence (Unit) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition general crystalline Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition sandstone Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition claystone Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition carbonates Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition basalt Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition tephra Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition ic Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition mollusc fragments Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition microfossil Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition sponge spicule Lithology/composition/facies (Lithology) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton composition diatom Size [µm] (Size) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton modal size Clast shape (Clast shape) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton shape angular Clast shape (Clast shape) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton shape subangular Clast shape (Clast shape) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton shape subrounded Clast shape (Clast shape) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton shape rounded Distribution (Distr) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton distribution even Distribution (Distr) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Skeleton distribution uneven Distribution (Distr) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Plasma Structure (Structure) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: voids Structure (Structure) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: other bedding Structure (Structure) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: other shear Structure (Structure) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: other brecciation Structure (Structure) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: other turbates Structure (Structure) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: other parallel Structure (Structure) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: other finegrained casing Structure (Structure) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: other lineation Fabric (Fabric) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Plasma fabric skelsepic Fabric (Fabric) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Plasma fabric lattisepic Fabric (Fabric) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Plasma fabric masepic Fabric (Fabric) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Plasma fabric unistrial Fabric (Fabric) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Plasma fabric omnisepic Diagenesis (Diagenesis) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Diagenesis carbonates Diagenesis (Diagenesis) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Diagenesis silicium Diagenesis (Diagenesis) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Diagenesis gypsium Diagenesis (Diagenesis) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Diagenesis sulfide Interpretation (Interpretation) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Micromorphological indications for grounded ice Interpretation (Interpretation) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) * COMMENT: Deformation acc. to Passchier (2000) Sequence identifier (SeqID) * PI: van der Meer, Jaap (Jaap.van.der.Meer@nioz.nl) License: Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/) Size: 581 data points */ Event Depth sed [m] Depth top [m] Depth bot [m] Sample label Unit Lithology Lithology (Skeleton composition general ...) Lithology (Skeleton composition sandstone) Lithology (Skeleton composition claystone) Lithology (Skeleton composition carbonates) Lithology (Skeleton composition basalt) Lithology (Skeleton composition tephra) Lithology (Skeleton composition ic) Lithology (Skeleton composition mollusc ...) Lithology (Skeleton composition microfossil) Lithology (Skeleton composition sponge s...) Lithology (Skeleton composition diatom) Size [µm] (Skeleton modal size) Clast shape (Skeleton shape angular) Clast shape (Skeleton shape subangular) Clast shape (Skeleton shape subrounded) Clast shape (Skeleton shape rounded) Distr (Skeleton distribution even) Distr (Skeleton distribution uneven) Distr (Plasma) Structure (voids) Structure (other bedding) Structure (other shear) Structure (other brecciation) Structure (other turbates) Structure (other parallel) Structure (other finegrained casing) Structure (other lineation) Fabric (Plasma fabric skelsepic) Fabric (Plasma fabric lattisepic) Fabric (Plasma fabric masepic) Fabric (Plasma fabric unistrial) Fabric (Plasma fabric omnisepic) Diagenesis (Diagenesis carbonates) Diagenesis (Diagenesis silicium) Diagenesis (Diagenesis gypsium) Diagenesis (Diagenesis sulfide) Interpretation (Micromorphological indication...) Interpretation (Deformation acc. to Passchier...) SeqID CRP-2 13.660 13.61 13.71 VAN.1 C.586 2.1 brecciated diamict x x x x x x x 150 x x even x x in intraclast in intraclast in intraclast x at depth 12-16 m 1 CRP-2 19.280 19.23 19.33 VAN.2 C.587 2.1 massive diamict x x x x x x x x 150 x x uneven diffuse x x in intraclast absent 1 CRP-2 25.680 25.63 25.73 VAN.3 C.588 2.2 laminated diamict x x x x x x x x 200 x x even x x in intraclast x in intraclast x 2 CRP-2 33.140 28.09 38.19 VAN.4 C.589 3.1 deformed diamict x x x x x x x minor amounts 100 x x x uneven in intraclast x x x x x absent 3 CRP-2 40.720 40.67 40.77 VAN.5 C.590 3.1 deformed mixture x x minor amounts x x 150 x x x x uneven x minor amounts in intraclast x x x absent 4 CRP-2 44.600 44.55 44.65 VAN.6 C.591 3.1 brecciated sand x x x <50 x x absent compound packing voids x in intraclast in intraclast x absent proglacial icepush at depth 44.91-47.87 m 4 CRP-2 47.300 47.25 47.35 VAN.7 C.592 3.1 brecciated sand x x x <50 x absent compound packing voids in intraclast in intraclast x absent 4 CRP-2 48.770 48.72 48.82 VAN.8 C.593 4.1 massive diamict x x x x x x 150 x x x even x minor amounts in intraclast x 4 CRP-2 53.760 53.71 53.81 VAN.9 C.594 4.1/5 transition diamict to mud/sandstone; brecciated x x x x x minor amounts <100 x x x x uneven in intraclast x vertical structure x x absent subglacial shear at depth 50-71 m 5 CRP-2A 78.070 78.02 78.12 VAN.10 C.595 6.1 diamict x x x x x 125 x x x x uneven compound packing voids wavy x x absent 6 CRP-2A 79.710 79.66 79.76 VAN.11 C.596 6.1 disrupted lenses x x x x x x x 100 x x uneven diffuse not clear minor amounts in intraclast in intraclast x x absent 6 CRP-2A 81.130 81.08 81.18 VAN.12 C.597 6.2 stratified diamict x x x x x 150 x x uneven diffuse not clear minor amounts in intraclast x x absent 6 CRP-2A 86.130 86.08 86.18 VAN.13 C.598 6.2 massive diamict x x x x x minor amounts 150 x x x even not clear x minor amounts x x 6 CRP-2A 91.255 91.20 91.31 VAN.14 C.599 6.3 deformed stratification x x x x minor amounts x x 125 x x x uneven compound packing voids inclined not clear minor amounts x in intraclast x x subglacial shear ? at depth 90.67-92.86 m 6 CRP-2A 96.900 96.85 96.95 VAN.15 C.600 7.1 diamict x x 200 x x x uneven inclined x minor amounts in intraclast absent in situ fracturing at depth 93.85-96.64 m 7 CRP-2A 104.570 104.51 104.63 VAN.16 C.601 7.1 diamict with intraclasts not available not available CRP-2A 108.750 108.70 108.80 VAN.17 C.602 7.1 laminated diamict x x x x 200 x x even x x x absent 7 CRP-2A 121.870 121.82 121.92 VAN.18 C.603 8.1 massive diamict x x x x x 250 x x x x uneven x not clear minor amounts x minor amounts minor amounts minor amounts minor amounts in intraclast strongly x 8 CRP-2A 122.420 122.37 122.47 VAN.19 C.604 8.1 deformed mix x x x x x x x 150 x x x x uneven compound packing voids x not clear x x, comet structure x in intraclast strongly x 8 CRP-2A 129.665 129.62 129.71 VAN.20 C.605 8.1 deformed soft sediment x x 100 x x uneven x x x in intraclast x in situ fracturing at depth 131-132 m 8 CRP-2A 184.740 184.69 184.79 VAN.21 C.606 8.4 disturbed bedding, grading to massive x x x x 250 x x even x x x in intraclast in intraclast x x mass-gravity flow at depth 183.35-185.95 m 9 CRP-2A 196.510 196.47 196.55 VAN.22 C.607 9.3 brecciated diamict x x 100 x x uneven x in intraclast x x absent 10 CRP-2A 203.700 203.65 203.75 VAN.23 C.608 9.3 diamict x x x x x x minor amounts x <100 x x x x uneven x minor amounts minor amounts in intraclast absent 10 CRP-2A 227.850 227.80 227.90 VAN.24 C.609 9.3 diamict x x x <100 x x even diffuse minor amounts x minor amounts in intraclast not clear x x 10 CRP-2A 238.840 238.80 238.88 VAN.25 C.610 9.3 diamict with intercalated sandstone x minor amounts x 150 x x x x x uneven x x x in intraclast x 10 CRP-2A 298.860 298.80 298.92 VAN.26 C.611 10.1 laminated diamict x x x 150 x x uneven x x x x x x in intraclast strongly x (clastic dyke) at depth 297.4 m 11 CRP-2A 300.050 300.00 300.10 VAN.27 C.612 10.1 laminated diamict x x x x 250 x x x x uneven x x x minor amounts in intraclast x 11