Utting, D., Atkinson, N., Pawley, S. et al. (1 more author) (2016) Reconstructing the confluence zone between Laurentide and Cordilleran ice sheets along the Rocky Mountain Foothills, southwest Alberta. Journal of Quaternary Science, 31 (7). pp. 769-787. ISSN 0267-8179
Abstract
Landform mapping near the Athabasca valley was fundamental to determining whether the Late Wisconsinan Laurentide and Cordilleran Ice Sheets (LIS, CIS) coalesced. In this paper we examine the detailed landform record using new LiDAR digital elevation and hillshade models of the area of confluence and eventual desuturing of these ice sheets. This work reveals an earlier more extensive Cordilleran advance before coalescence with the LIS. When the ice sheets coalesced, the flow pattern was dominated by ice flow along the mountain front, with Cordilleran ice flowing out of major trunk valleys but Laurentide ice flowing into the Foothills up smaller valleys. This flow pattern implies that when the ice sheets coalesced the CIS was already waning, or at least was not at its maximum. Deglaciation was interrupted by several re-advances, probably related to the destabilizing effect of proglacial lakes along the ice margin.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 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. |
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: | 28 Sep 2016 09:19 |
Last Modified: | 27 Oct 2017 20:29 |
Published Version: | https://doi.org/10.1002/jqs.2903 |
Status: | Published |
Publisher: | Wiley |
Refereed: | Yes |
Identification Number: | 10.1002/jqs.2903 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:105138 |