10.1594/PANGAEA.510752
Powell, Ross
Ross
Powell
Krissek, Lawrence A
Lawrence A
Krissek
van der Meer, Jaap
Jaap
van der Meer
Environmental analysis on sediment core CRP-2 from the Ross Sea, Antarctica
PANGAEA
2000
Core wireline system
CRP-2
Sampling/drilling from ice
Cape Roberts Project (CRP)
1998-10-01T00:00:00/1998-11-25T14:20:00
en
Supplementary Publication Series of Datasets
10013/epic.28273.d001
2 datasets
application/zip
Creative Commons Attribution 3.0 Unported
Cape Roberts Project drill core 2/2A was obtained from Roberts Ridge, a sea-floor high located at 77° S, 16 km offshore from Cape Roberts in western McMurdo Sound, Antarctica. The recovered core is about 624 m long and includes strata dated as being Quaternary, Pliocene, Miocene and Oligocene in age. The core includes twelve facies commonly occurring in associations that are repeated in particular sequences throughout the core and which are interpreted as representing different depositional environments through time. Depositional systems inferred to be represented in the succession include: outer shelf with minor iceberg influence, outer shelf-inner shelf-nearshore to shoreface under iceberg influence, deltaic and/or grounding-line fan, and ice proximal-ice marginal-subglacial (mass flow/rainout diamictite/subglacial till) singly or in combination. Changes in palaeoenvironmental interpretations up the core are used to estimate relative glacial proximity to the site through time. These inferred glacial fluctuations are then compared with the global eustatic sea level and d18O curves to evaluate the potential of glacial fluctuations on Antarctica influencing these records of global change. Although the comparisons are tentative at present, the records do have similarities, but there are also some differences especially in possible number (and perhaps magnitude) of glacial fluctuations that require further evaluation.
Supplement to: Powell, Ross; Krissek, Lawrence A; van der Meer, Jaap (2000): Preliminary depositional environmental analysis of CRP-2/2A, Victoria Land Basin, Antarctica: palaeoglaciological and palaeoclimatic inferences. Terra Antartica, 7(3), 313-322
163.71945000000002
-77.00598083333334
off Cape Roberts, Ross Sea, Antarctica