Clay mineralogy and shear strength of subglacial and glaciomarine sediments in the southern Bellingshausen Sea ...

• Main Authors: Hillenbrand, Claus-Dieter, Ehrmann, Werner, Larter, Robert D, Benetti, Sara, Dowdeswell, Julian A, Ó Cofaigh, Colm, Graham, Alastair G C, Grobe, Hannes
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2009
• Subjects: Box corer; Gravity corer; Giant box corer; MultiCorer; Gravity corer Kiel type; JR20040123; ANT-XI/3; James Clark Ross; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarctic; Arctic; Bellingshausen Sea; Pacific; Southern Ocean; West Antarctic Ice Sheet; Antarc*; Ice Sheet; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.711173; https://doi.pangaea.de/10.1594/PANGAEA.711173

The Belgica Trough and the adjacent Belgica Trough Mouth Fan in the southern Bellingshausen Sea (Pacific sector of the Southern Ocean) mark the location of a major outlet for the West Antarctic Ice Sheet during the Late Quaternary. The drainage basin of an ice stream that advanced through Belgica Trough across the shelf during the last glacial period comprised an area exceeding 200,000 km**2 in the West Antarctic hinterland. Previous studies, mainly based on marine-geophysical data from the continental shelf and slope, focused on the bathymetry and seafloor bedforms, and the reconstruction of associated depositional processes and ice- drainage patterns. In contrast, there was only sparse information from seabed sediments recovered by coring. In this paper, we present lithological and clay mineralogical data of 21 sediment cores collected from the shelf and slope of the southern Bellingshausen Sea. Most cores recovered three lithological units, which can be attributed to facies types deposited under glacial, ... : Further shear strength data see Hillenbrand et al. (2005) datasets: PS2533-2 doi:10.1594/PANGAEA.89693, PS2538-2 doi:10.1594/PANGAEA.89694, PS2540-3 doi:10.1594/PANGAEA.89695 ...