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Berg, Sonja; Wagner, Bernd; Cremer, Holger; Leng, Melanie J; Melles, Martin (2010): Investigations on sediment core Co1010 from Rauer Group, Antarctica [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.745306, Supplement to: Berg, S et al. (2010): Late Quaternary environmental and climate history of Rauer Group, East Antarctica. Palaeogeography, Palaeoclimatology, Palaeoecology, 297, 201-213, https://doi.org/10.1016/j.palaeo.2010.08.002

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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.
Related to:
Berg, Sonja; Wagner, Bernd; White, Duanne A; Cremer, Holger; Bennike, Ole; Melles, Martin (2009): New marine core record of Late Pleistocene glaciation history, Rauer Group, East Antarctica. Antarctic Science, 21(3), 299-300, https://doi.org/10.1017/S0954102009001886
Project(s):
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas (SPP1158)
Funding:
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Median Latitude: -68.814205 * Median Longitude: 77.830400 * South-bound Latitude: -68.826050 * West-bound Longitude: 77.771550 * North-bound Latitude: -68.802360 * East-bound Longitude: 77.889250
Date/Time Start: 2007-03-08T00:00:00 * Date/Time End: 2007-03-13T00:00:00
Event(s):
Co1010 * Latitude: -68.802360 * Longitude: 77.889250 * Date/Time: 2007-03-08T00:00:00 * Recovery: 21.4 m * Location: Filla Island, Rauer Group, Antarctica * Campaign: ANT-XXIII/9 (PS69) * Basis: Polarstern * Method/Device: Composite Core (COMPCORE)
Co1011 * Latitude: -68.826050 * Longitude: 77.771550 * Date/Time: 2007-03-13T00:00:00 * Recovery: 10.99 m * Location: Flag Island * Campaign: ANT-XXIII/9 (PS69) * Basis: Polarstern * Method/Device: Composite Core (COMPCORE)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

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Datasets listed in this publication series

  1. Berg, S; Wagner, B; Cremer, H et al. (2010): Radiocarbon ages of sediment profile Co1010. https://doi.org/10.1594/PANGAEA.744486
  2. Berg, S; Wagner, B; Cremer, H et al. (2010): Diatom abundance in sediment profile Co1010. https://doi.org/10.1594/PANGAEA.744754
  3. Berg, S; Wagner, B; Cremer, H et al. (2010): Geochemistry on sediment profile Co1010. https://doi.org/10.1594/PANGAEA.744550
  4. Berg, S; Wagner, B; Cremer, H et al. (2010): Radiocarbon ages of sediment profile Co1011. https://doi.org/10.1594/PANGAEA.744527
  5. Berg, S; Wagner, B; Cremer, H et al. (2010): Diatom abundance in sediment profile Co1011. https://doi.org/10.1594/PANGAEA.744755
  6. Berg, S; Wagner, B; Cremer, H et al. (2010): Geochemistry on sediment profile Co1011. https://doi.org/10.1594/PANGAEA.744539