Investigations on sediment core Co1010 from Rauer Group, Antarctica ...

• Main Authors: Berg, Sonja, Wagner, Bernd, Cremer, Holger, Leng, Melanie J, Melles, Martin
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2010
• Subjects: Composite Core; 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; Prydz Bay; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.745306; https://doi.pangaea.de/10.1594/PANGAEA.745306

The Rauer Group is an archipelago in Prydz Bay, East Antarctica. The ice-free islands and the surrounding shallow marine areas provide valuable archives for the reconstruction of the late Pleistocene and Holocene environmental and climatic history of the region. Two sediment records from two marine inlets of Rauer Group have been studied for their sedimentological, geochemical, and biological characteristics. Radiocarbon ages from one of the inlets indicate ice-free conditions within the last glacial cycle, probably during the second half of Marine Isotope Stage 3. Subsequent ice sheet coverage of Rauer Group during the Last Glacial Maxiumum (LGM) can be inferred from a till layer recovered in one of the basins. The inlets became ice-free prior to 11,200 cal yr BP, when biogenic sedimentation started. Deglacial processes in the catchments, however, influenced the inlets until ~9200 cal. yr BP as evidenced by the input of minerogenic material. Marine productivity under relatively open water conditions ... : Supplement to: Berg, Sonja; Wagner, Bernd; Cremer, Holger; Leng, Melanie J; Melles, Martin (2010): Late Quaternary environmental and climate history of Rauer Group, East Antarctica. Palaeogeography, Palaeoclimatology, Palaeoecology, 297, 201-213 ...