Environmental analysis on sediment core CRP-2 from the Ross Sea, Antarctica ...

• Main Authors: Powell, Ross, Krissek, Lawrence A, van der Meer, Jaap
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2000
• Subjects: Core wireline system; CRP-2; Sampling/drilling from ice; Cape Roberts Project CRP; Antarc*; Antarctica; antartic*; McMurdo Sound; Ross Sea; Victoria Land
• Online Access: https://dx.doi.org/10.1594/pangaea.510752; https://doi.pangaea.de/10.1594/PANGAEA.510752

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 ... : 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 ...