Facies analysis on sediment core CRP-3 from the Ross Sea, Antarctica ...

• Main Authors: Powell, Ross, Laird, M G, Naish, Tim R, Fielding, Christopher R, Krissek, Lawrence A, van der Meer, Jaap
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2001
• Subjects: Core wireline system; CRP-3; 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.510760; https://doi.pangaea.de/10.1594/PANGAEA.510760

Cape Roberts Project drill core 3 (CRP-3) was obtained from Roberts ridge, a sea-floor high located at 77°S, 12 km offshore from Cape Roberts in western McMurdo Sound, Antarctica. The recovered core is about 939 m long and comprises strata dated as being early Oligocene (possibly latest Eocene) in age, resting unconformably on ~116 m of basement rocks consisting of Palaeozoic Beacon Supergroup sediments. The core includes ten facies commonly occurring in five major 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, inner shelf, nearshore to shoreface each 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. The record is taken to represent the initial talus/alluvial fan setting of a ... : Supplement to: Powell, Ross; Laird, M G; Naish, Tim R; Fielding, Christopher R; Krissek, Lawrence A; van der Meer, Jaap (2001): Depositional environments for strata cored in CRP-3 (Cape Roberts Project), Victoria Land Basin, Antarctica: Palaeoglaciological and palaeoclimatological inferences. Terra Antartica, 8(3), 207-216 ...