10.1594/PANGAEA.510745
Webb, Peter-Noel
Peter-Noel
Webb
Strong, C Percy
C Percy
Strong
Investigation of Quaternary foraminifera in sediment core CRP-1 from the Ross Sea, Antarctica
PANGAEA
1998
Core wireline system
CRP-1
Sampling/drilling ice
Cape Roberts Project (CRP)
1997-10-17T01:30:00/1997-10-24T02:00:00
en
Supplementary Publication Series of Datasets
10013/epic.28299.d001
3 datasets
application/zip
Creative Commons Attribution 3.0 Unported
Foraminifera are examined in twenty-six samples from a 44 metre succession of Quaternary glacial sediments recovered from the CRP-1 drillhole on Roberts Ridge, southwestern Ross Sea, Antarctica. In situ marine assemblages were documented in at least three of the six lithostratigraphic units, and it is likely that the remaining three interbedded diamicton units are also marine in origin. Peak foraminiferal diversities are documented in Unit 3.1 (73 species) and Unit 2.2 (32 species). Calcareous benthics dominate the assemblages, but may be accompanied by abundant occurrences of the planktonic Neogloboquadrina pachyderma. Low diversity agglutinated faunas appear in the uppermost strata of Units 4.1 and 2.2. A close relationship between lithofacics and foraminiferal biofacies points to marine environments that alternated between proximity to and distance from active glaciers and iceshelf fronts, with associated variations in salinity, sea-surface ice cover and the levels of rainout from debris-laden ice.
Supplement to: Webb, Peter-Noel; Strong, C Percy (1998): Occurrence, stratigraphic distribution and palaeoecology of Quaternary foraminifera from CRP-1. Terra Antartica, 5(3), 455-472
163.75507999999996
-77.00757999999999
off Cape Roberts, Ross Sea, Antarctica