Weathering characteristics and lithology of samples from the Rauer Group, Antarctica, obtained in February/March 2007, and conducted with field support of POLARSTERN cruise ANT-XXIII/9 ...

• Main Authors: White, Duanne A, Bennike, Ole, Berg, Sonja, Harley, S, Fink, David, Kiernan, Kevin W, McConnell, Anne, Wagner, Bernd
• Format: Dataset
• Language: English
• Published: PANGAEA 2009
• Subjects: Event label; Optional event label; Date/Time of event; Date/Time of event 2; Latitude of event; Longitude of event; Elevation of event; Area/locality; Deposit type; Distance; Number; Standard deviation; Comment; Weathering Index; Gneiss; Geological sample; Rock sample; Schmidt hammer bedrock rebound; Moriwaki Degree of Weathering MDoW; ANT-XXIII/9; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarc*; Antarctic; Antarctica; East Antarctica; Ice Sheet; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.858210; https://doi.pangaea.de/10.1594/PANGAEA.858210

The presence of glacial sediments across the Rauer Group indicates that the East Antarctic ice sheet formerly covered the entire archipelago and has since retreated at least 15 km from its maximum extent. The degree of weathering of these glacial sediments suggests that ice retreat from this maximum position occurred sometime during the latter half of the last glacial cycle. Following this phase of retreat, the ice sheet margin has not expanded more than ~1 km seaward of its present position. This pattern of ice sheet change matches that recorded in Vestfold Hills, providing further evidence that the diminutive Marine Isotope Stage 2 ice sheet advance in the nearby Larsemann Hills may have been influenced by local factors rather than a regional ice-sheet response to climate and sea-level change. ... : Supplement to: White, Duanne A; Bennike, Ole; Berg, Sonja; Harley, S; Fink, David; Kiernan, Kevin W; McConnell, Anne; Wagner, Bernd (2009): Geomorphology and glacial history of Rauer Group, East Antarctica. Quaternary Research, 72(1), 80-90 ...