Powell, Ross; Laird, M G; Naish, Tim R; Fielding, Christopher R; Krissek, Lawrence A; van der Meer, Jaap (2001): (Table 1) Facies characteristics and their interpretations of sediment core CRP-3 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.465196, In supplement to: Powell, R et al. (2001): Depositional environments for strata cored in CRP-3 (Cape Roberts Project), Victoria Land Basin, Antarctica: Palaeoglaciological and palaeoclimatological inferences. Terra Antartica, 8(3), 207-216, hdl:10013/epic.28207.d001
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Project(s):
Cape Roberts Project (CRP)
Coverage:
Latitude: -77.006000 * Longitude: 163.719000
Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00
Minimum Elevation: -295.0 m * Maximum Elevation: -295.0 m
Event(s):
CRP-3 * Latitude: -77.006000 * Longitude: 163.719000 * Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00 * Elevation: -295.0 m * Penetration: 939 m * Recovery: 936 m * Location: Ross Sea * Campaign: CRP-3 * Basis: Sampling/drilling from ice * Method/Device: Core wireline system (CWS) * Comment: 11.76 km at 76° true from Cape Roberts, 2.04 km at 225° true from CRP-2. Fast ice thickness: 2.0 to 2.2 m. Sea rise embedded to 9.55 mbsf. Lateral ice movement from spudding 5.0 m to 82° true. HQ core to 345.85 mbsf. NQ core to 939.42 mbsf. Core recovery 97%. Phase 1 logging to 345 mbsf, Phase 2 logging to 773 mbsf, Phase 3 logging to 918 mbsf. Deepest Cenozoic lithology and depth: sandstone breccia from 822.87 to 823.11 mbsf. Age of oldest Cenozoic strata: earliest Oligocene or latest Eocene. Deepest core lithology and depth: light red-brown quartz-cemented quartz sandstone to 939.42 mbsf. Age of bedrock: (mid?) Devonian.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Facies name/code | Facies | Powell, Ross | |||
| 2 | Facies name/code | Facies | Powell, Ross | |||
| 3 | Description | Description | Powell, Ross | Key sedimentological characteristics | ||
| 4 | Description | Description | Powell, Ross | Key sedimentological characteristics-continued | ||
| 5 | Interpretation | Interpretation | Powell, Ross | Depositional process | ||
| 6 | Interpretation | Interpretation | Powell, Ross | Key interpretation criteria |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
27 data points
Data
| 1 Facies | 2 Facies | 3 Description (Key sedimentological characte...) | 4 Description (Key sedimentological characte...) | 5 Interpretation (Depositional process) | 6 Interpretation (Key interpretation criteria) |
|---|---|---|---|---|---|
| 1 | Mudstone | massive, often sandy, local laminae, common lonestones, locally brecciated, marine marco- and microfossils | hemipelagic suspension settling, rainout from ice rafting, may be modified by other processes, brecciated by tectonism or glacial tectonism or glacial tectonism | fine-grained character, isolated clasts, marine fossils | |
| 2 | Interstratified sandstone and mudstone | sandstones on sharp contacts, sandstones grade up, often to mudstones, massives and amalgamated beds, planar stratified, local ripple cross-lamination, some normal, local reverse grading, dispersed to abundant clasts, marine marco- and mircofossils | range of marine processes: low- to moderatedensity sediment gravity flow deposition;combined wave and current action, rapid deposition and resedimentation | sandstone/mudstone association, style of internal stratification and grading, marine fossils | |
| 3 | Poorly sorted (muddy) very fine to coarse sandstone | various poorly sorted sandstones, locally massive and amalgamated, locally planar laminated and bedded, normal grading, local reverse, local ripple cross-lamination, local soft-sediment deformation, boudinage | local dispersed clasts grading to matrix-supported conglomerate, marine marco- and mircofossils | medium- to high-density sediment gravity flow deposition, very fine to fine sandstones may be from settling from turbid plumes with high sediment concentrations, may be massive due to depositional processes or mixing by bioturbation, freeze/thaw. Loading | style of internal stratification and grading, degree of sorting, marine fossils |
| 4 | Moderately to well sorted, stratified fine sandstone | local low angle cross-bedding and cross-lamination, locally planar, thin bedded to lamination, possible HCS, quartz rich, local coal laminae, locally with dark mudstone, bituminous, penecontemporaneous soft-sediment deformation | marine marco- and microfossils | dilute tractional currents (within or about wave base to shoreface) | style of internal stratification, particle size and sorting, marine fossils |
| 5 | Moderately to well sorted, stratified or massive, fine to coarse sandstone | mostly medium-grained, locally fine or coarse, planar- to cross-stratified, locally massive and amalgamated, dispersed to abundant clasts, local gravelly layers at base, weak to moderate bioturbation, marine fossils | marine currents/wave influence (perhaps shoreface), local erosion with hiatuses, rainout from iceberg rafting | particle size and sorting, style of internal stratification, bioturbation, marine fossils |