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Grounding-zone wedges on the northern Larsen shelf, Antarctic Peninsula

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posted on 06.03.2015, 13:20 by Jeffrey EvansJeffrey Evans, K.A. Hogan
Prominent quasi-linear or lobate wedge-shaped depositional sedimentary landforms, termed grounding-zone wedges (GZWs), are distributed widely on polar continental shelves. They are regarded as a product of the deposition of mainly subglacially-transported sediment at the grounding-zone of modern and palaeo ice sheets and ice streams (e.g. Shipp et al. 1999; Ottesen et al. 2005; Horgan et al. 2013). GZWs vary in shape, dimensions and regional distribution across the continental shelf, where they can form single or multiple and widely- or closely-spaced depositional features. The presence of these landforms is used to delimit the maximum and retreat positions of former ice-sheet margins on high-latitude continental shelves (e.g. Shipp et al. 1999; Ottesen et al. 2005). During the Late Glacial transition, retreat of the Antarctic Peninsula Ice Sheet that covered the shelf of the NE Antarctic Peninsula during the Last Glacial Maximum (LGM) produced several distinctive grounding-zone landforms (Evans et al. 2005).

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School

  • Social Sciences

Department

  • Geography and Environment

Published in

Geological Society, London

Volume

Memoir

Issue

1-2

Pages

xx - xx (3)

Citation

EVANS, J. and HOGAN, K.A., 2015. Grounding-zone wedges on the northern Larsen shelf, Antarctic Peninsula. IN: Dowdeswell, J.A. et al (eds). Atlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient. London: Geological Society, pp 237-8.

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© Geological Society of London

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

This paper was accepted for publication in Atlas of Submarine Glacial Landforms: Modern, Quaternary and Ancient. 2015 http://dx.doi.org/10.1144/M46.3 © Geological Society of London 2015

ISBN

9781786202680

Book series

GSL Memoirs; 46

Language

en

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