Sedimentology on cores from the Bellingshausen und Amundsen seas ...

• Main Authors: Hillenbrand, Claus-Dieter, Grobe, Hannes, Diekmann, Bernhard, Kuhn, Gerhard, Fütterer, Dieter K
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2003
• Subjects: Giant box corer; Gravity corer Kiel type; MultiCorer; ANT-VI/2; ANT-XI/3; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Silicon Cycling in the World Ocean SINOPS; Amundsen Sea; Antarc*; Antarctic; Antarctic Peninsula; Antarctica; Bellingshausen Sea; Southern Ocean; West Antarctica
• Online Access: https://dx.doi.org/10.1594/pangaea.728740; https://doi.pangaea.de/10.1594/PANGAEA.728740

Surface sediments from the Antarctic continental margin in the Bellingshausen and Amundsen seas (Pacific sector of the Southern Ocean) were investigated in order to decipher their capability to record modern environmental conditions. Spatial distribution of terrigenous sand and mud reflect regional differences in current-induced redeposition of glaciogenic debris. Clay mineral assemblages in the shelf sediments are controlled by the supply of terrigenous detritus from source rocks in the adjacent hinterland suggesting the occurrence of yet unknown sedimentary rocks in the hinterland of the Amundsen Sea. Clay mineral distribution on the continental rise in the Bellingshausen Sea points to the continuation of a bottom current from the Antarctic Peninsula rise to at least 94°W. Foraminifer-bearing and opal-poor deposits prevail on the continental margin in the western Bellingshausen Sea and the Amundsen Sea, whereas diatom-bearing and carbonate-free sediments characterize the eastern Bellingshausen Sea. ... : Supplement to: Hillenbrand, Claus-Dieter; Grobe, Hannes; Diekmann, Bernhard; Kuhn, Gerhard; Fütterer, Dieter K (2003): Distribution of clay minerals and proxies for productivity in surface sediments of the Bellingshausen and Amundsen seas (West Antarctica) - Relation to modern environmental conditions. Marine Geology, 193(3-4), 253-271 ...