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Webb, Peter-Noel; Strong, C Percy (2000): Distribution of foraminifera, pre-Pliocene foraminifera and macrofossil debris in sediment core CRP-2 (Table 1). 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):
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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, sediment/rockDepthmGeocode
2Cassidulinoides porrectusC. porrectus#Webb, Peter-NoelCounting, foraminifera
3Ammoelphidiella antarcticaA. antarctica#Webb, Peter-NoelCounting, foraminifera
4Lagena costataL. costata#Webb, Peter-NoelCounting, foraminifera
5Lenticulina gibbaL. gibba#Webb, Peter-NoelCounting, foraminifera
6Fissurina alveolataF. alveolata#Webb, Peter-NoelCounting, foraminifera
7Fissurina subcircularisF. subcircularis#Webb, Peter-NoelCounting, foraminifera
8Cassidulinoides parkerianaC. parkeriana#Webb, Peter-NoelCounting, foraminifera
9Rosalina cf. globularisR. cf. globularis#Webb, Peter-NoelCounting, foraminiferalarge
10Heronallenia kempiH. kempi#Webb, Peter-NoelCounting, foraminifera
11Patellina corrugataP. corrugata#Webb, Peter-NoelCounting, foraminifera
12Cribroelphidium incertumC. incertum#Webb, Peter-NoelCounting, foraminifera
13Cibicides refulgensC. refulgens#Webb, Peter-NoelCounting, foraminifera
14Ehrenbergina glabraE. glabra#Webb, Peter-NoelCounting, foraminifera
15Oolina globosaO. globosa#Webb, Peter-NoelCounting, foraminifera
16MiliolidaeMiliolidae#Webb, Peter-NoelCounting, foraminifera
17Globocassidulina subglobosaG. subglobosa#Webb, Peter-NoelCounting, foraminifera
18Lagena gracilisL. gracilis#Webb, Peter-NoelCounting, foraminifera
19Oolina hexagonaO. hexagona#Webb, Peter-NoelCounting, foraminifera
20Rosalina globularisR. globularis#Webb, Peter-NoelCounting, foraminifera
21Globocassidulina crassaG. crassa#Webb, Peter-NoelCounting, foraminifera
22Oolina squamosulcataO. squamosulcata#Webb, Peter-NoelCounting, foraminifera
23Trifarina earlandiT. earlandi#Webb, Peter-NoelCounting, foraminifera
24Astrononion antarcticumA. antarcticum#Webb, Peter-NoelCounting, foraminifera
25Specimen countSp count#Webb, Peter-NoelCountingTotal specimens/sample
26Number of speciesSpec No#Webb, Peter-NoelCountingTotal species/sample
27ForaminiferaForamWebb, Peter-NoelPre-Pliocene Foraminifera
28Sponge spiculaeSponge spicWebb, Peter-Noel
29Echinodermata fragmentsEchinod fragmWebb, Peter-NoelEchinoderm spines
30Shell debrisShellsWebb, Peter-NoelBivalve debris
31Wood remainsWoodWebb, Peter-Noel
32Lithology/composition/faciesLithologyWebb, Peter-Noel
33Quinqueloculina sp.Quinqueloculina sp.#Webb, Peter-NoelCounting, foraminifera
Size:
195 data points

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