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Strong, C Percy; Webb, Peter-Noel (2000): Occurence of foraminifera and other microfossils in sediment core CRP-2/2A (Table 1). PANGAEA, https://doi.org/10.1594/PANGAEA.183510, Supplement to: Strong, CP; Webb, P-N (2000): Oligocene and Miocene foraminifera from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 461-472, hdl:10013/epic.28260.d001

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Abstract:
Sparse to moderately abundant foraminiferal assemblages from Oligocene and Lower Miocene sediments in the CRP-2/2A drillhole contain C.27 genera and 42 species of calcareous benthic foraminifera. No planktic or agglutinated taxa were observed. On the basis of their faunal characteristics, four Foraminiferal Units are defined in drillhole succession: Foraminiferal Unit I (26.91-193.95 mbsf), mostly sparse assemblages with Elphidium magellanicum and Cribroelphidium sp.; Foraminiferal Unit II (193.95-342.42 mbsf), mostly moderately abundant assemblages with Cassidulinoides aequilatera and Eponides bradyi; Foraminiferal Unit III (342.42-486.19 mbsf), moderately abundant to sparse assemblages characterised by Cassidulinoides chapmani and Stainforthia sp.; and Foraminiferal Unit IV, Improverished (486.19-624.15, total depth, mbsf), with mostly barren residues, but with large Milioliidae recorded in situ at various horizons in the drill core.
Foraminiferal Units I-IV lack taxa allowing correlation to standard zonal schemes. Inspection of faunal records from CIROS-1 and DSDP 270 indicates that, although the faunas show an overall similarity, CRP-2/2A Foraminiferal Units I-IV are not identifiable at these sites. The units are therefore most likely to reflect local environmental changes, and probably will prove useful for local correlation, but their lateral extent is undetermined. All four assemblages apparently represent various glacially-influenced shelf environments, and appear to reflect a long term deepening trend from Units IV to II, from perhaps inner to mid or outer-shelf depths, followed by a return to shallower, inner shelf, conditios for Unit I.
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 Elevation: -177.9 m * Maximum Elevation: -177.9 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 * 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 InvestigatorMethodComment
1Depth, top/minDepth topmStrong, C Percy
2Depth, bottom/maxDepth botmStrong, C Percy
3Lithologic unit/sequenceUnitStrong, C Percy
4PreservationPreservStrong, C Percy
5Number of speciesSpec No#Strong, C Percy
6Specimen countSp count#Strong, C Percy
7Ammoelphidiella pustulosaA. pustulosaStrong, C PercyAbundance estimate
8Ammoelphidiella uniforaminaA. uniforaminaStrong, C PercyAbundance estimate
9Ammoelphidiella sp.Ammoelphidiella sp.Strong, C PercyAbundance estimate
10Anomalinoides sp.Anomalinoides sp.Strong, C PercyAbundance estimate
11Bulimina sp.Bulimina sp.Strong, C PercyAbundance estimate
12Cassidulinoides aequilateraC. aequilateraStrong, C PercyAbundance estimate
13Cassidulinoides braziliensisC. braziliensisStrong, C PercyAbundance estimate
14Cassidulinoides chapmaniC. chapmaniStrong, C PercyAbundance estimate
15Cibicides lobatulusC. lobatulusStrong, C PercyAbundance estimate
16Cibicides refulgensC. refulgensStrong, C PercyAbundance estimate
17Cibicides spp.Cibicides spp.Strong, C PercyAbundance estimate
18Cribroelphidium sp.Cribroelphidium sp.Strong, C PercyAbundance estimate
19Elphidium excavatum groupE. excavatum grStrong, C PercyAbundance estimate
20Elphidium magellanicumE. magellanicumStrong, C PercyAbundance estimate
21Epistominella exiguaE. exiguaStrong, C PercyAbundance estimate
22Eponides bradyiE. bradyiStrong, C PercyAbundance estimate
23Fissurina bisulcataF. bisulcataStrong, C PercyAbundance estimate
24Fissurina sp.Fissurina sp.Strong, C PercyAbundance estimate
25Fursenkoina schreibersianaF. schreibersianaStrong, C PercyAbundance estimate
26Lenticulina sp.Lenticulina sp.Strong, C PercyAbundance estimate
27Marginulina tumidaM. tumidaStrong, C PercyAbundance estimate
28Marginulina sp.Marginulina sp.Strong, C PercyAbundance estimate
29Marginulinopsis sp.Marginulinopsis sp.Strong, C PercyAbundance estimate
30Melonis affinisM. affinisStrong, C PercyAbundance estimate
31Melonis barleeanusM. barleeanusStrong, C PercyAbundance estimate
32MiliolidaeMiliolidaeStrong, C PercyAbundance estimateMiliolidae, large (Pyrgo spp.)
33Nodosaria spp.Nodosaria spp.Strong, C PercyAbundance estimate
34Nonionella bradiiN. bradiiStrong, C PercyAbundance estimate
35Nonionella irideaN. irideaStrong, C PercyAbundance estimate
36Nonionella magnalinguaN. magnalinguaStrong, C PercyAbundance estimate
37Oolina aqiculataO. aqiculataStrong, C PercyAbundance estimate
38Oolina globosaO. globosaStrong, C PercyAbundance estimate
39Parafissurina lateralisP. lateralisStrong, C PercyAbundance estimate
40Pseudonodosaria symmetricaP. symmetricaStrong, C PercyAbundance estimate
41Pullenia subcarinataP. subcarinataStrong, C PercyAbundance estimate
42Pullenia spp.Pullenia spp.Strong, C PercyAbundance estimate
43Pyrulinoides sp.Pyrulinoides sp.Strong, C PercyAbundance estimate
44Quinqueloculina seminulaQ. seminulaStrong, C PercyAbundance estimate
45Quinqueloculina triangularisQ. triangularisStrong, C PercyAbundance estimate
46Rosalina globularisR. globularisStrong, C PercyAbundance estimate
47Stainforthia sp.Stainforthia sp.Strong, C PercyAbundance estimate
48Vaginulinopsis sp.Vaginulinopsis sp.Strong, C PercyAbundance estimate
49Echinodermata fragmentsEchinod fragmStrong, C PercyAbundance estimate
50OstracodaOstracStrong, C PercyAbundance estimate
51Diatom fragmentsDiatom fragmStrong, C PercyAbundance estimateShell fragments
52Sponge spiculaeSponge spicStrong, C PercySmear slide analysis
53Diatom abundanceDiatom abundStrong, C PercyAbundance estimate
Size:
1117 data points

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