Description of lithofacies associations and their interpreted settings from sequences of sediment core CRP-1 (Table 2) ...

• Main Authors: Powell, Ross, Hambrey, Mike J, Krissek, Lawrence A
• Format: Dataset
• Language: English
• Published: PANGAEA 1998
• Subjects: DEPTH, sediment/rock; Depth, top/min; Depth, bottom/max; Facies name/code; Lithology/composition/facies; Environment; Core wireline system; CRP-1; Sampling/drilling ice; Cape Roberts Project CRP; Antarc*; Antarctica; antartic*; McMurdo Sound
• Online Access: https://dx.doi.org/10.1594/pangaea.433089; https://doi.pangaea.de/10.1594/PANGAEA.433089

Cape Roberts Project drillcore 1 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 147 m long with the upper 43.15 metres below the sea floor (revised figure) being dated as Quarternary and the older part of the sequence being Miocene. The core includes nine facies: sandy diamict, muddy diamict, gravel/conglomerate, mud(stone), clay(stone) and carbonate. These facies occure in associations that are repeated in particulare sequences throughout the core, and are interpreted as representing different depositional environments through time. Seven lithofacies associations are interpreted as representing offshore shelf, ice protected/below wave-base; prodeltaic/offshore shelf; delta front/sandy shelf; ice system; subglacial till/rainout diamict/debris flow diamicts singly or in combination; and a carbonate-rich shelf bank. The facies associations are used to infer that the Quaternary section ... : Supplement to: Powell, Ross; Hambrey, Mike J; Krissek, Lawrence A (1998): Quaternary and Miocene glacial and climatic history of the Cape Roberts drillsite region, Antarctica. Terra Antartica, 5(3), 341-351 ...