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Glacial geomorphology of Marguerite Bay Palaeo-Ice stream, western Antarctic Peninsula.

Livingstone, S.J. and O'Cofaigh, C. and Stokes, C.R. and Hillenbrand, C-D. and Vieli, A. and Jamieson, S.S.R. (2013) 'Glacial geomorphology of Marguerite Bay Palaeo-Ice stream, western Antarctic Peninsula.', Journal of maps., 9 (4). pp. 558-572.

Abstract

This paper presents a glacial geomorphological map of over 17,000 landforms on the bed of a major palaeo-ice stream in Marguerite Bay, western Antarctic Peninsula. The map was compiled using various geophysical datasets from multiple marine research cruises. Eight glacial landform types are identified: mega-scale glacial lineations, crag-and-tails, whalebacks, gouged, grooved and streamlined bedrock, grounding-zone wedges, subglacial meltwater channels, gullies and channels, and iceberg scours. The map represents one of the most complete marine ice-stream signatures available for scrutiny, and these data hold much potential for reconstructing former ice sheet dynamics, testing numerical ice sheet models, and understanding the formation of subglacial bedforms beneath ice streams. In particular, they record a complex bedform signature of palaeo-ice stream flow and retreat since the last glacial maximum, characterised by considerable spatial variability and strongly influenced by the underlying geology. The map is presented at a scale of 1: 750,000, designed to be printed at A2 size, and encompasses an area of 128,420 km2.

Item Type:Article
Keywords:Marine, Palaeo-ice stream, Glacial geomorphology, Antarctica, Bedform variability, Geology
Full text:(VoR) Version of Record
Available under License - Creative Commons Attribution.
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1080/17445647.2013.829411
Publisher statement:© 2013 The Author(s). Published by Taylor & Francis This is an open-access article distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The moral rights of the named author(s) have been asserted.
Date accepted:No date available
Date deposited:02 April 2015
Date of first online publication:2013
Date first made open access:No date available

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