Deeply buried glacigenic debris-flows imaged in 3D seismic data from early Quaternary sediments of the northern North Sea

• Main Authors: Ottesen, D, Dowdeswell, JA, Bugge, T
• Format: Article in Journal/Newspaper
• Language: English
• Published: Geological Society of London 2016
• Subjects: 37 Earth Sciences; 3705 Geology; Arctic; Antarctic; Laberg; Antarc*
• Online Access: https://www.repository.cam.ac.uk/handle/1810/253387

Debris flows composed of diamictic glacial sediment are found on the continental slope offshore of many former ice streams in the Arctic and Antarctic (Vorren et al. 1998). The debris flows are often stacked, making up important building-blocks of the major trough-mouth fans that form huge depocentres on high-latitude margins (e.g. Laberg & Vorren 1995; King et al. 1996; Taylor et al. 2002). Such debris flows have been investigated previously using 2D-seismic methods and have also been mapped in plan using side-scan sonar and multibeam systems (Vogt et al. 1993; Dowdeswell et al. 1996; Nygård et al. 2002 Pedrosa et al. 2011). 3D-seismic data can be used to image and map these and other glacigenic landforms buried within Quaternary sediments (e.g. Dowdeswell & Ottesen 2013 ). This is the author accepted manuscript. The final version is available from[the Geological Society of London. via https://doi.org/10.1144/M46.131