Sedimentology of the southern Bellingshausen Sea ...
A major trough ('Belgica Trough') eroded by a palaeo-ice stream crosses the continental shelf of the southern Bellingshausen Sea (West Antarctica) and is associated with a trough mouth fan ('Belgica TMF') on the adjacent continental slope. Previous marine geophysical and geologic...
Main Authors: | , , , , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
PANGAEA
2010
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Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.742532 https://doi.pangaea.de/10.1594/PANGAEA.742532 |
Summary: | A major trough ('Belgica Trough') eroded by a palaeo-ice stream crosses the continental shelf of the southern Bellingshausen Sea (West Antarctica) and is associated with a trough mouth fan ('Belgica TMF') on the adjacent continental slope. Previous marine geophysical and geological studies investigated the bathymetry and geomorphology of Belgica Trough and Belgica TMF, erosional and depositional processes associated with bedform formation, and the temporal and spatial changes in clay mineral provenance of subglacial and glaciomarine sediments. Here, we present multi-proxy data from sediment cores recovered from the shelf and uppermost slope in the southern Bellingshausen Sea and reconstruct the ice-sheet history since the last glacial maximum (LGM) in this poorly studied area of West Antarctica. We combined new data (physical properties, sedimentary structures, geochemical and grain-size data) with published data (shear strength, clay mineral assemblages) to refine a previous facies classification for the ... : Supplement to: Hillenbrand, Claus-Dieter; Larter, Robert D; Dowdeswell, Julian A; Ehrmann, Werner; Ó Cofaigh, Colm; Benetti, Sara; Graham, Alastair G C; Grobe, Hannes (2010): The sedimentary legacy of a palaeo-ice stream on the shelf of the southern Bellingshausen Sea: Clues to West Antarctic glacial history during the Late Quaternary. Quaternary Science Reviews, 29(19-20), 2741-2763 ... |
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