Physical properties and age determination of sediment cores from the Hinlopen/Yermak Megaslide north of Spitsbergen, Arctic Ocean ...

• Main Authors: Winkelmann, Daniel, Geissler, Wolfram H, Schneider, Julia, Stein, Ruediger, Schenke, Hans Werner
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2008
• Subjects: Gravity corer; Kasten corer; Gravity corer Kiel type; ARK-XX/3; ARK-VIII/2; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Arctic Ocean; Nansen Basin; Spitsbergen
• Online Access: https://dx.doi.org/10.1594/pangaea.729706; https://doi.pangaea.de/10.1594/PANGAEA.729706

Integrated interpretation of multi-beam bathymetric, sediment-penetrating acoustic (PARASOUND) and seismic data show a multiple slope failure on the northern European continental margin, north of Spitsbergen. The first slide event occurred during MIS 3 around 30 cal. ka BP and was characterised by highly dynamic and rapid evacuation of ca. 1250 km**3 of sediment from the lower to the upper part of the continental slope. During this event, headwalls up to 1600 m high were created and ca. 1150 km**3 material from hemi-pelagic sediments and from the lower pre-existing trough mouth fan has been entrained and transported into the semi-enclosed Sophia Basin. This megaslide event was followed by a secondary evacuation of material to the Nansen Basin by funnelling of the debris through the channel between Polarstern Seamount and the adjacent continental slope. The main slide debris is overlain by a set of fining-upward sequences as evidence for the associated suspension cloud and following minor failure events. ... : Supplement to: Winkelmann, Daniel; Geissler, Wolfram H; Schneider, Julia; Stein, Ruediger (2008): Dynamic and timing of the Hinlopen/Yermak Megaslide north of Spitsbergen, Arctic Ocean. Marine Geology, 250(1-2), 34-50 ...