Print Email Facebook Twitter Late Quaternary environmental and climate history of Rauer Group, East Antarctica Title Late Quaternary environmental and climate history of Rauer Group, East Antarctica Author Berg, S. Wagner, B. Cremer, H. Leng, M.J. Melles, M. TNO Bouw en Ondergrond Publication year 2010 Abstract 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 indicates an early Holocene climate optimum until 8200. cal yr BP, which is followed by a cooler period with increased sea ice. Warmer conditions are inferred for the mid Holocene, when both basins experienced an input of freshwater between ~. 5700-3500. cal yr BP, probably due to ice-sheet melting and increased precipitation on the islands. Neoglacial cooling in the late Holocene since c. 3500. cal yr BP is reflected by an increase in sea ice in both inlets. © 2010 Elsevier B.V. Subject Earth & EnvironmentGM - GeomodellingEELS - Earth, Environmental and Life SciencesGeosciencesEast AntarcticaHoloceneMarine sedimentsRauer GroupHoloceneice sheetmarine sedimentpaleoclimatepaleoenvironmentPleistocenesea iceshallow waterAntarcticaEast AntarcticaPrydz BayRauer Islands To reference this document use: http://resolver.tudelft.nl/uuid:0e91b913-7ed9-4073-972d-f06c495c8a73 TNO identifier 409798 ISSN 0031-0182 Source Palaeogeography, Palaeoclimatology, Palaeoecology, 297 (1), 201-213 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.