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Christine Batchelor, SPRI
Wednesday 17 October 2012, 16:30-17:30
Reflection seismic investigations of the Beaufort Sea margin, Arctic Ocean: Variable history of Quaternary ice-sheet advance
- đ¤ Speaker: Christine Batchelor, SPRI
- đ Date & Time: Wednesday 17 October 2012, 16:30 - 17:30
- đ Venue: Scott Polar Research Institute, main lecture theatre
Abstract
The seismic stratigraphy and sedimentary architecture of the Beaufort Sea shelf and adjacent continental slope are investigated using a comprehensive grid of high-resolution 2-D seismic reflection data. Three cross-shelf troughs, representing the locations of former ice streams draining a 1000 km-long section of the Laurentide Ice Sheet are examined; the Mackenzie, Amundsen Gulf and M’Clure Strait systems. Significant contrasts are identified between the Mackenzie Trough on the western Beaufort Sea margin and the Amundsen Gulf and M’Clure Strait troughs to the east, both in terms of their glacial history and the resulting architecture of the shelf and slope. These observations are considered in relation to the dynamics of the Laurentide Ice Sheet and the glacial history of the Beaufort Sea margin.
Series This talk is part of the Scott Polar Research Institute - Polar Physical Sciences Seminar series.
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