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A geomorphological overview of glacial landforms on the Icelandic continental shelf

Spagnolo, M. and Clark, C.D. (2009) A geomorphological overview of glacial landforms on the Icelandic continental shelf. Journal of Maps , 2009. pp. 37-52. ISSN 1744-5647

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Abstract

The availability of a bathymetric database that covers about 80% of the Icelandic shelf has made it possible to produce a geomorphological map of the glacial landforms. The digital elevation model of the bathymetry was analyzed as a series of shaded relief images. Trough edges, bulging trough mouths, moraines, eskers, melt water channels, streamlined bedrock and streamlined drift, mostly hitherto unmapped, distributed all around the island have been identified. Moraines are found on the shelf, within troughs and inside fjords. Streamlined landforms are always confined to the bottom of troughs. Troughs appear to have been cut by ice streams draining an ice sheet that likely covered the entire shelf. At the shelf break, most troughs terminate with contours that bulge in a convex-outwards fashion. This suggests that an ice stream eroded, transported and finally deposited large amounts of sediment at the trough mouth. Overall, the glacial morphology of the shelf highlights a radial pattern that indicates a main ice divide near the centre of Iceland.

Item Type: Article
Copyright, Publisher and Additional Information: © 2009 Journal of Maps. Reproduced in accordance with the publisher's self-archiving policy.
Keywords: North-West Iceland; Maximum Ice-Sheet; Late Quaternary; History; Vestfirdir; Record; Extent
Academic Units: The University of Sheffield > Faculty of Social Sciences (Sheffield) > Department of Geography (Sheffield)
Depositing User: Miss Anthea Tucker
Date Deposited: 16 Feb 2010 11:23
Last Modified: 08 Feb 2013 16:59
Published Version: http://dx.doi.org/10.4113/jom.2009.1049
Status: Published
Publisher: Journal of Maps, Kingston University
Refereed: Yes
Identification Number: 10.4113/jom.2009.1049
URI: http://eprints.whiterose.ac.uk/id/eprint/10366

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