A set of grounding-zone wedges in Vestfjorden, North Norway
At the Last Glacial Maximum (LGM), a 400 km-long ice stream drained an interior drainage basin of the Scandinavian Ice Sheet of about 150,000 km2 through Vestfjorden and the adjacent cross-shelf trough of Traenadjupet further downstream (Fig. 1) (Ottesen et al. 2005a). Evidence for past ice-stream a...
| Main Authors: | , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
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Geological Society of London
2016
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| Subjects: | |
| Online Access: | https://www.repository.cam.ac.uk/handle/1810/253385 |
| Summary: | At the Last Glacial Maximum (LGM), a 400 km-long ice stream drained an interior drainage basin of the Scandinavian Ice Sheet of about 150,000 km2 through Vestfjorden and the adjacent cross-shelf trough of Traenadjupet further downstream (Fig. 1) (Ottesen et al. 2005a). Evidence for past ice-stream activity comes from a variety of submarine sedimentary landforms that are streamlined in the direction of past ice flow (Ottesen et al. 2005b). Superimposed on these streamlined landforms are several wedge-like sedimentary features orientated transverse-to-flow. These submarine landforms suggest that deglacial retreat was punctuated by still-stands that produced substantial depocentres known as grounding-zone wedges (GZW) (e.g. Anderson 1999; Dowdeswell et al. 2008; Dowdeswell & Fugelli 2012; Batchelor & Dowdeswell 2015). This is the author accepted manuscript. The final version is available from the Geological Society of London via https://doi.org/10.1144/M46.135 |
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