Terrestrially derived sediments are inferred to be transported from shelf both as grounded ice advanced during glacial expansion, and as ice retreated during deglacial periods. Glacial to deglacial sediments were laminated as a result of varying intensity of bottom currents. Biogenic sediments were deposited during MIS 1, 5, and 7 under open ocean conditions. Two cores show depositional/sedimentological variations on glacial-interglacial scales. Here we present multi-proxy records of two sediment cores (BS17-GC01 and BS17-GC02) from the Bellingshausen Sea continental rise, to explore relationships between depositional regime and ice sheet dynamics. However, these connections are poorly understood. Understanding the dynamics of this transport pathway is important for utilizing distal deep-sea sedimentary archives to determine past changes in the Antarctic ice sheet. 4Korea Institute of Ocean Science and Technology, Busan, Republic of KoreaĪntarctic continental margin sediments are eroded from the shelf and transported to the slope/rise in association with changing ice sheet configuration.3Department of Surface Geosciences, GNS Science, Lower Hutt, New Zealand.2Department of Earth and Environmental Sciences, Jeonbuk National University, Jeonju, Republic of Korea.1Korea Polar Research Institute, Incheon, Republic of Korea.Prebble 3, Myung-Il Kang 1, Sookwan Kim 4, Jinku Park 1, Min Kyung Lee 1, Jae Il Lee 1, Kyu-Cheul Yoo 1 and Heung Soo Moon 1 Sunghan Kim 1*, Young-Suk Bak 2, Joseph G.
0 Comments
Leave a Reply. |