Webb, Peter-Noel; Strong, C Percy (2000): Distribution of foraminifera, pre-Pliocene foraminifera and macrofossil debris in sediment core CRP-2 (Table 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.144693, Supplement to: Webb, P-N; Strong, CP (2000): Pliocene benthic foraminifera from CRP-2 (Lithostratigraphic Unit 2.2), Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 453-459, hdl:10013/epic.28261.d001
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Abstract:
The stratigraphic distribution, assemblage content, paleoecology and age of foraminifera recovered in fourteen of sixteen samples from the 5.63 m thick CRP-2 (Lithostratigraphic Unit 2.2) are discussed. LSU 2.2 comprises four discrete lithologic beds. The upward sequence is informally referred to as the lower sand bed, diamicton bed, middle sand bed, and upper sand bed and it is surmised that these four units are closely related in time. The lower sand bed (~1.5m), which overlies lower Miocene sediments and from which it is separated by the Ross Sea Unconformity, contains traces of recycled Miocene diatoms but is otherwise barren of biogenic material. The diamicton bed (~2.42 m) contains 21 species of benthic foraminifera, with assemblages consistently dominated by Cassidulinoides porrectus, Ammoelphidiella antarctica, Rosalina cf. globularis, Cibicides refulgens, and Ehrenbergina glabra. The overlying middle sand bed (~1.9 m) contains 13 species. with C. porrectus and E. glabra dominant and A. antarctica less common than in the underlying diamicton bed. The upper sand bed (~0.46 m) contains four species and very few tests. The diamicton bed and middle sand bed assemblages are considered to be near in situ thanatocoenoses; and sediments interpreted as marine in origin but influenced by hyposaline waters and nearby ice. Planktic taxa are absent, perhaps indicating the presence of tidewater glaciers, sea ice and/or hyposaline surface waters. The small assemblage in the upper sand bed is more problematic and may be recycled. On the basis of foraminifera in the diamicton and middle sand beds. LSU 2.2 is assigned to the Pliocene. The overlying diamicton in LSU 2.1 contains abundant Quaternary foraminifera.
Project(s):
Cape Roberts Project (CRP)
Coverage:
Latitude: -77.005983 * Longitude: 163.719450
Date/Time Start: 1998-10-01T00:00:00 * Date/Time End: 1998-10-01T00:00:00
Minimum DEPTH, sediment/rock: 21.19 m * Maximum DEPTH, sediment/rock: 26.62 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 * 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
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Cassidulinoides porrectus | C. porrectus | # | Webb, Peter-Noel | Counting, foraminifera | |
| 3 | Ammoelphidiella antarctica | A. antarctica | # | Webb, Peter-Noel | Counting, foraminifera | |
| 4 | Lagena costata | L. costata | # | Webb, Peter-Noel | Counting, foraminifera | |
| 5 | Lenticulina gibba | L. gibba | # | Webb, Peter-Noel | Counting, foraminifera | |
| 6 | Fissurina alveolata | F. alveolata | # | Webb, Peter-Noel | Counting, foraminifera | |
| 7 | Fissurina subcircularis | F. subcircularis | # | Webb, Peter-Noel | Counting, foraminifera | |
| 8 | Cassidulinoides parkeriana | C. parkeriana | # | Webb, Peter-Noel | Counting, foraminifera | |
| 9 | Rosalina cf. globularis | R. cf. globularis | # | Webb, Peter-Noel | Counting, foraminifera | large |
| 10 | Heronallenia kempi | H. kempi | # | Webb, Peter-Noel | Counting, foraminifera | |
| 11 | Patellina corrugata | P. corrugata | # | Webb, Peter-Noel | Counting, foraminifera | |
| 12 | Cribroelphidium incertum | C. incertum | # | Webb, Peter-Noel | Counting, foraminifera | |
| 13 | Cibicides refulgens | C. refulgens | # | Webb, Peter-Noel | Counting, foraminifera | |
| 14 | Ehrenbergina glabra | E. glabra | # | Webb, Peter-Noel | Counting, foraminifera | |
| 15 | Oolina globosa | O. globosa | # | Webb, Peter-Noel | Counting, foraminifera | |
| 16 | Miliolidae | Miliolidae | # | Webb, Peter-Noel | Counting, foraminifera | |
| 17 | Globocassidulina subglobosa | G. subglobosa | # | Webb, Peter-Noel | Counting, foraminifera | |
| 18 | Lagena gracilis | L. gracilis | # | Webb, Peter-Noel | Counting, foraminifera | |
| 19 | Oolina hexagona | O. hexagona | # | Webb, Peter-Noel | Counting, foraminifera | |
| 20 | Rosalina globularis | R. globularis | # | Webb, Peter-Noel | Counting, foraminifera | |
| 21 | Globocassidulina crassa | G. crassa | # | Webb, Peter-Noel | Counting, foraminifera | |
| 22 | Oolina squamosulcata | O. squamosulcata | # | Webb, Peter-Noel | Counting, foraminifera | |
| 23 | Trifarina earlandi | T. earlandi | # | Webb, Peter-Noel | Counting, foraminifera | |
| 24 | Astrononion antarcticum | A. antarcticum | # | Webb, Peter-Noel | Counting, foraminifera | |
| 25 | Specimen count | Sp count | # | Webb, Peter-Noel | Counting | Total specimens/sample |
| 26 | Number of species | Spec No | # | Webb, Peter-Noel | Counting | Total species/sample |
| 27 | Foraminifera | Foram | Webb, Peter-Noel | Pre-Pliocene Foraminifera | ||
| 28 | Sponge spiculae | Sponge spic | Webb, Peter-Noel | |||
| 29 | Echinodermata fragments | Echinod fragm | Webb, Peter-Noel | Echinoderm spines | ||
| 30 | Shell debris | Shells | Webb, Peter-Noel | Bivalve debris | ||
| 31 | Wood remains | Wood | Webb, Peter-Noel | |||
| 32 | Lithology/composition/facies | Lithology | Webb, Peter-Noel | |||
| 33 | Quinqueloculina sp. | Quinqueloculina sp. | # | Webb, Peter-Noel | Counting, foraminifera |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
195 data points