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Strong, C Percy; Webb, Peter-Noel (2001): (Table 1) Distribution and numerical abundance of foraminifera of sediment core CRP-3. PANGAEA, https://doi.org/10.1594/PANGAEA.183918, Supplement to: Strong, CP; Webb, P-N (2001): Lower Oligocene foraminiferal fauna from CRP-3 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 347-358, hdl:10013/epic.28237.d001

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Abstract:
A foraminiferal fauna comprising c. 33 genera and c. 53 species was recovered from a suite of 156 Lower Oligocene sediment samples, mostly muddy sandstone and siltstone, selected over the 2.80 - 823.11 mbsf depth range in the CRP-3 drillhole. All foraminifers, except for 2 isolated specimens, occurred above 340 mbsf, with 54 of 103 samples from above this depth being fossiliferous. At a generic and even a specific level, the fauna contains many components for the present-day Antarctic foraminiferal biota, indicating that its origin is at least as old as early Oligocene.
Foraminiferal assemblages represent a single biofacies which is characterised by low diversity, and by dominant and persistent occurrences of Cassidulinoides chapmani, other Cassidulinoides and Globocassidulina species, and Stainforthia sp. These taxa and commonly accompanied by Cibicides lobatulus, Epistominella exigna, Fissurina spp. Nonionella spp., and Oolina spp. Large miliolids occur as isolated specimens at various levels. Planktic species are absent, and agglutinated taxa occur only rarely and sporadically. Preservation generally is fair good, while absolute abundance is very low, with a maximum of c. 6 specimens/gram, and most samples containing <1 specimen/gram. These assemblages probably represent mid to outer shelf depth (50-200 m) in glacially influenced environments with a high sedimentation rate and poor oceanic connections.
Although the CRP-3 fauna closely resembles the one from Foraminiferal Unit III as defined in CRP-2/2A (CRP-2/2A Science Team, 1999; Strong & Webb, 2000, hdl:10013/epic.28260.d001), absence of some species, and the first records of others in the uppermost CRP-3 section, is consistent with an interpretation of minimal overlap between the CRP-2/2A and CRP-3 sediments. The fauna also appears correlative with the Globocassidulina-Cassidulinoides-Trochoeiphidiella Assemblage Zone from lower DSDP-270, and with faunas from the lower but not lowermost, section at CIROS-1.
Project(s):
Coverage:
Latitude: -77.006000 * Longitude: 163.719000
Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00
Minimum DEPTH, sediment/rock: 3.160 m * Maximum DEPTH, sediment/rock: 406.400 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 * 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):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rockDepthmGeocode
2Depth, top/minDepth topmStrong, C Percy
3Depth, bottom/maxDepth botmStrong, C Percy
4Lithologic unit/sequenceUnitStrong, C Percy
5Number of speciesSpec No#Strong, C PercyCounting, foraminifera, benthic
6Specimen countSp count#Strong, C PercyCounting, foraminifera, benthic
7Foraminifera, benthic preservationForam bent preservStrong, C Percy
8Anomalina spp.Anomalina spp.#Strong, C PercyCounting, foraminifera, benthic
9Anomalinoides cf. eoglabraA. cf. eoglabra#Strong, C PercyCounting, foraminifera, benthic
10Anomalinoides fasciatusA. fasciatus#Strong, C PercyCounting, foraminifera, benthic
11Anomalinoides globulosusA. globulosus#Strong, C PercyCounting, foraminifera, benthic
12Anomalinoides miosuturalisA. miosuturalis#Strong, C PercyCounting, foraminifera, benthic
13Anomalinoides spp.Anomalinoides spp.#Strong, C PercyCounting, foraminifera, benthic
14Astacolus spp.Astacolus spp.#Strong, C PercyCounting, foraminifera, benthic
15Baggina cf. breviorB. cf. brevior#Strong, C PercyCounting, foraminifera, benthic
16Bulimina sp.Bulimina sp.#Strong, C PercyCounting, foraminifera, benthic
17Cassidulinoides bradyiC. bradyi#Strong, C PercyCounting, foraminifera, benthic
18Cassidulinoides braziliensisC. braziliensis#Strong, C PercyCounting, foraminifera, benthic
19Cassidulinoides chapmaniC. chapmani#Strong, C PercyCounting, foraminifera, benthic
20Cribroelphidium sp.Cribroelphidium sp.#Strong, C PercyCounting, foraminifera, benthic
21Cibicides lobatulusC. lobatulus#Strong, C PercyCounting, foraminifera, benthic
22Cibicides cf. temporatusC. cf. temporatus#Strong, C PercyCounting, foraminifera, benthic
23Cibicides spp.Cibicides spp.#Strong, C PercyCounting, foraminifera, benthic
24Cyclammina incisaC. incisa#Strong, C PercyCounting, foraminifera, benthic
25Dentalina sp.Dentalina sp.#Strong, C PercyCounting, foraminifera, benthic
26Discorbis sp.Discorbis sp.#Strong, C PercyCounting, foraminifera, benthic
27Epistominella exiguaE. exigua#Strong, C PercyCounting, foraminifera, benthic
28Eponides bradyiE. bradyi#Strong, C PercyCounting, foraminifera, benthic
29Fissurina fimbriataF. fimbriata#Strong, C PercyCounting, foraminifera, benthic
30Fissurina marginataF. marginata#Strong, C PercyCounting, foraminifera, benthic
31Fissurina spp.Fissurina spp.#Strong, C PercyCounting, foraminifera, benthic
32Gavelinella spp.Gavelinella spp.#Strong, C PercyCounting, foraminifera, benthic
33Globigerina sp.Globigerina sp.#Strong, C PercyCounting, foraminifera, benthicindeterminate
34Globocassidulina crassaG. crassa#Strong, C PercyCounting, foraminifera, benthic
35Globocassidulina subglobosaG. subglobosa#Strong, C PercyCounting, foraminifera, benthic
36Gyroidina orbicularisG. orbicularis#Strong, C PercyCounting, foraminifera, benthic
37Haplophragmoides spp.Haplophragmoides spp.#Strong, C PercyCounting, foraminifera, benthic
38Hanzawaia sp.Hanzawaia sp.#Strong, C PercyCounting, foraminifera, benthic
39Karrerculina sp.Karrerculina sp.#Strong, C PercyCounting, foraminifera, benthic
40Lenticulina spp.Lenticulina spp.#Strong, C PercyCounting, foraminifera, benthic
41Melonis barleeanusM. barleeanus#Strong, C PercyCounting, foraminifera, benthic
42Melonis graniferumM. graniferum#Strong, C PercyCounting, foraminifera, benthic
43Melonis spp.Melonis spp.#Strong, C PercyCounting, foraminifera, benthic
44MiliolidaeMiliolidaeStrong, C PercyCounting, foraminifera, benthicMiliolidiae (in situ record)
45MiliolidaeMiliolidae#Strong, C PercyCounting, foraminifera, benthiclarge
46Nodosaria spp.Nodosaria spp.#Strong, C PercyCounting, foraminifera, benthic
47Nonionella bradiiN. bradii#Strong, C PercyCounting, foraminifera, benthic
48Nonionella irideaN. iridea#Strong, C PercyCounting, foraminifera, benthic
49Nonionella magnalinguaN. magnalingua#Strong, C PercyCounting, foraminifera, benthic
50Nonionella spp.Nonionella spp.#Strong, C PercyCounting, foraminifera, benthic
51Oolina apiculataO. apiculata#Strong, C PercyCounting, foraminifera, benthic
52Oolina apiopleuraO. apiopleura#Strong, C PercyCounting, foraminifera, benthic
53Oolina globosaO. globosa#Strong, C PercyCounting, foraminifera, benthic
54Parafissurina lateralisP. lateralis#Strong, C PercyCounting, foraminifera, benthic
55Planularia sp.Planularia sp.#Strong, C PercyCounting, foraminifera, benthic
56Pullenia subcarinataP. subcarinata#Strong, C PercyCounting, foraminifera, benthic
57Quinqueloculina spp.Quinqueloculina spp.#Strong, C PercyCounting, foraminifera, benthic
58Reophax sp.Reophax sp.#Strong, C PercyCounting, foraminifera, benthic
59Stainforthia sp.Stainforthia sp.#Strong, C PercyCounting, foraminifera, benthic
60Textularia sp.Textularia sp.#Strong, C PercyCounting, foraminifera, benthic
61Echinodermata fragmentsEchinod fragmStrong, C Percyspines/plates
62Fecal pelletsFecal pelStrong, C Percy
63ForaminiferaForamStrong, C Percyindeterminate
64ForaminiferaForamStrong, C Percyrecycled
65MolluscaMolluscaStrong, C Percyfragments
66OstracodaOstracStrong, C Percy
67Siliceous spiculesSilic spicStrong, C Percy
68Foraminifera, benthicForam bent#/gStrong, C PercyCounting >125 µm fraction
69Diatom abundanceDiatom abundStrong, C Percy
Size:
4879 data points

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