Livingstone, S.J., Cofaigh, C.O. and Evans, D.J.A. (2010) A major ice drainage pathway of the last British-Irish Ice Sheet: the Tyne Gap, northern England. Journal of Quarternary Science, 25 (3). 354 - 370. ISSN 0267-8179
Abstract
The Tyne Gap is a wide pass, situated between the Scottish Southern Uplands and the English Pennines that connects western and eastern England. It was a major ice flow drainage pathway of the last British–Irish Ice Sheet. This study presents new glacial geomorphological and sedimentological data from the Tyne Gap region that has allowed detailed reconstructions of palaeo-ice flow dynamics during the Late Devensian (Marine Isotope Stage 2). Mapped lineations reveal a complex palimpsest pattern which shows that ice flow was subject to multiple switches in direction. These are summarised into three major ice flow phases. Stage I was characterised by convergent Lake District and Scottish ice that flowed east through the Tyne Gap, as a topographically controlled ice stream. This ice stream was identified from glacial geomorphological evidence in the form of convergent bedforms, streamlined subglacial bedforms and evidence for deformable bed conditions; stage II involved northerly migration of the Solway Firth ice divide back into the Southern Uplands, causing the easterly flow of ice to be weakened, and resulting in southeasterly flow of ice down the North Tyne Valley; and stage III was characterised by strong drawdown of ice into the Irish Sea Ice Basin, thus starving the Tyne Gap of ice and causing progressive ice sheet retreat westwards back across the watershed, prior to ice stagnation
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2009 John Wiley & Sons, Ltd. This is an author produced version of a paper subsequently published in Journal of Quaternary Science. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Tyne Gap; British-Irish Ice Sheet; ice sheet dynamics; Topographic ice stream; glacial geomorphology |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Social Sciences (Sheffield) > Department of Geography (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 19 Jun 2014 15:11 |
Last Modified: | 23 Mar 2018 17:43 |
Published Version: | http://dx.doi.org/10.1002/jqs.1341 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/jqs.1341 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:79410 |