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Blanc-Vernet, Laure; Moullade, Michel (1987): (Figure 2) Benthic foraminifera abundance of DSDP Hole 93-603C. PANGAEA,, Supplement to: Blanc-Vernet, L; Moullade, M (1987): Distribution of late Neogene and Quaternary benthic foraminifers in the Northwest Atlantic, Deep Sea Drilling Project Leg 93, Sites 603 and 604. In: van Hinte, JE; Wise, SW Jr; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 93, 473-480,

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Eighty-one benthic foraminifer species were recognized in Neogene and Quaternary sediments drilled in DSDP Holes 603C and 604.
Hole 603C is characterized by low benthic foraminiferal number. All the species present are known to inhabit deep water in the modern oceans. Values for specific diversity vary from 10 to 25 species per sample and are inversely proportional to species abundance. Analysis of the composition of the benthic foraminiferal assemblages indicates that Site 603 was probably situated in a transitional zone under the simultaneous influence of both Antarctic Bottom Water and North Atlantic Deep Water during the Neogene and Quaternary.
Hole 604 contains greater abundances of benthic specimens than Hole 603C. Bathyal-abyssal autochthonous assemblages dominate in Recent/Holocene, lowermost Quaternary and Pliocene sediments, whereas most of the Quaternary and the upper Miocene are characterized by mixing of shallow-water and deep-water species. Periods of redeposition of displaced neritic foraminifers appear to be synchronous with periods when there was increased influx of coarser detritic material to the oceanic basin.
Related to:
DSDP (1989): Data from the Deep Sea Drilling Project. Sediment, hard rock and reference files. National Geophysical Data Center, National Environmental Satellite, Data and Information Service, National Oceanic and Atmospheric Administration, U.S. Department of Commerce, 1, CD-ROM
Latitude: 35.496300 * Longitude: -70.031000
Date/Time Start: 1983-05-05T00:00:00 * Date/Time End: 1983-05-05T00:00:00
Minimum DEPTH, sediment/rock: 0.50 m * Maximum DEPTH, sediment/rock: 361.82 m
93-603C * Latitude: 35.496300 * Longitude: -70.031000 * Date/Time: 1983-05-05T00:00:00 * Elevation: -4639.5 m * Penetration: 366 m * Recovery: 314 m * Campaign: Leg93 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 39 cores; 359.8 m cored; 6.2 m drilled; 87.3 % recovery
Species abundance: R = rare (1-5 %), F = few (5-10 %), C = common (10-20 %), A = abundant (20-40 %), D = dominant (>40 %), - = absent.
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Sample code/labelSample labelBlanc-Vernet, Laure
2DEPTH, sediment/rockDepth sedmGeocode
3EpochEpochBlanc-Vernet, Laure
4Planktic foraminifera zonePlank foram zoneBlanc-Vernet, Laure
5Number of speciesSpec No#Blanc-Vernet, Laure
6Osangularia umboniferaO. umboniferaBlanc-Vernet, Laure
7Pullenia bulloidesP. bulloidesBlanc-Vernet, Laure
8Pullenia sp.Pullenia sp.Blanc-Vernet, Laure
9Melonis barleeanusM. barleeanusBlanc-Vernet, Laure
10Melonis pompilioidesM. pompilioidesBlanc-Vernet, Laure
11Melonis sp.Melonis sp.Blanc-Vernet, Laure
12Oridorsalis umbonatusO. umbonatusBlanc-Vernet, Laure
13Eggerella bradyiE. bradyiBlanc-Vernet, Laure
14Planulina wuellerstorfiP. wuellerstorfiBlanc-Vernet, Laure
15Globocassidulina subglobosaG. subglobosaBlanc-Vernet, Laure
16Ehrenbergina sp.Ehrenbergina sp.Blanc-Vernet, Laure
17Gyroidina sp.Gyroidina sp.Blanc-Vernet, Laure
767 data points

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