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Glacial landsystems, retreat dynamics and controls on Loch Lomond Stadial (Younger Dryas) glaciation in Britain

Bickerdike, H.L.; Ó Cofaigh, C.; Evans, D.J.A; Stokes, C.R.

Glacial landsystems, retreat dynamics and controls on Loch Lomond Stadial (Younger Dryas) glaciation in Britain Thumbnail


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Abstract

Glacial geomorphology relating to the Loch Lomond Stadial (Younger Dryas) in Britain is used to construct five glacial landsystem models. These landsystems lie on a continuum of increasing ice thickness and decreasing topographic control and typify the principal styles of glaciation during the stadial. The landsystems comprise: the cirque/niche glacier landsystem, the alpine icefield landsystem, the lowland piedmont lobe landsystem, the plateau icefield landsystem and the icecap landsystem. Geomorphological features representing the icecap landsystem are present only at the centre of the West Highland Glacier Complex, which was flanked primarily by satellite alpine and plateau icefields. The cirque/niche glacier landsystem was present predominantly in areas that experienced conditions only marginally favourable for glacier development at peripheral sites. Three styles of glacier retreat are recorded by the geomorphology: active, two-phase and uninterrupted retreat. Of these, active retreat appears to be most widespread within the Loch Lomond Stadial limits. These retreat styles reflect a combination of climatic and topographic conditions, coupled with local factors influencing the preservation of landforms from which retreat dynamics can be inferred. Likewise, the distribution of landsystems was influenced by an interplay between topography and climate, with glacier formation being facilitated in locations where topographical conditions aided in the accumulation of snow. The pattern also supports the existence of previously recognized northward and eastward precipitation gradients across Britain during the stadial.

Citation

Bickerdike, H., Ó Cofaigh, C., Evans, D., & Stokes, C. (2018). Glacial landsystems, retreat dynamics and controls on Loch Lomond Stadial (Younger Dryas) glaciation in Britain. Boreas: An International Journal of Quaternary Research, 47(1), 202-224. https://doi.org/10.1111/bor.12259

Journal Article Type Article
Acceptance Date Mar 26, 2017
Online Publication Date May 29, 2017
Publication Date 2018-01
Deposit Date Mar 28, 2017
Publicly Available Date May 30, 2017
Journal Boreas
Print ISSN 0300-9483
Electronic ISSN 1502-3885
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 47
Issue 1
Pages 202-224
DOI https://doi.org/10.1111/bor.12259

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Copyright Statement
Advance online version © 2017 The Authors. Boreas published by John Wiley & Sons Ltd on behalf of The Boreas Collegium. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.





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