Late readvance and rapid final deglaciation of the last ice sheet in the Grampian Mountains, Scotland
ABSTRACT Towards the end of the last glaciation, ice sourced from the western Grampian Mountains of Scotland flowed down Strath Spey to encroach on the northern flanks of the Cairngorm Mountains. The maximum of this late advance and its subsequent retreat is recorded by moraines, ice‐marginal meltwa...
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crwiley:10.1002/jqs.2911 2024-03-31T07:53:05+00:00 Late readvance and rapid final deglaciation of the last ice sheet in the Grampian Mountains, Scotland Hall, Adrian M. Binnie, Steven A. Sugden, David Dunai, Tibor J. Wood, Christina Carnegie Trust 2016 http://dx.doi.org/10.1002/jqs.2911 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2911 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2911 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 31, issue 8, page 869-878 ISSN 0267-8179 1099-1417 Paleontology Earth and Planetary Sciences (miscellaneous) Arts and Humanities (miscellaneous) journal-article 2016 crwiley https://doi.org/10.1002/jqs.2911 2024-03-05T05:33:35Z ABSTRACT Towards the end of the last glaciation, ice sourced from the western Grampian Mountains of Scotland flowed down Strath Spey to encroach on the northern flanks of the Cairngorm Mountains. The maximum of this late advance and its subsequent retreat is recorded by moraines, ice‐marginal meltwater channels, and kame terraces that can be traced for 60 km along Strath Spey. New cosmogenic 10 Be exposure ages from moraines indicate deglaciation at 15.1 ± 1.1 ka. This timing matches closely the recalibrated mean ages of 14.7 ± 0.7 and 15.2 ± 0.7 ka for the Wester Ross Readvance in the North‐West Highlands. A synchronous readvance of the British–Irish Ice Sheet (BIIS) towards the end of Greenland Stadial 2a (GS‐2a) (16.9–14.7 ka) is indicated. Thereafter active ice retreat from the flanks of Strath Spey was rapid, occurring within the ∼1 ka uncertainty of the cosmogenic exposure ages. We suggest the advance followed the collapse of the marine parts of the BIIS at ∼16 ka due to conditions of increased precipitation occurring at a time of low temperatures. The rapidity of deglaciation may reflect enhanced Föhn effects caused by the ice dome in the western Grampians. Article in Journal/Newspaper Greenland Ice Sheet Wiley Online Library Greenland Journal of Quaternary Science 31 8 e2911 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Paleontology Earth and Planetary Sciences (miscellaneous) Arts and Humanities (miscellaneous) |
spellingShingle |
Paleontology Earth and Planetary Sciences (miscellaneous) Arts and Humanities (miscellaneous) Hall, Adrian M. Binnie, Steven A. Sugden, David Dunai, Tibor J. Wood, Christina Late readvance and rapid final deglaciation of the last ice sheet in the Grampian Mountains, Scotland |
topic_facet |
Paleontology Earth and Planetary Sciences (miscellaneous) Arts and Humanities (miscellaneous) |
description |
ABSTRACT Towards the end of the last glaciation, ice sourced from the western Grampian Mountains of Scotland flowed down Strath Spey to encroach on the northern flanks of the Cairngorm Mountains. The maximum of this late advance and its subsequent retreat is recorded by moraines, ice‐marginal meltwater channels, and kame terraces that can be traced for 60 km along Strath Spey. New cosmogenic 10 Be exposure ages from moraines indicate deglaciation at 15.1 ± 1.1 ka. This timing matches closely the recalibrated mean ages of 14.7 ± 0.7 and 15.2 ± 0.7 ka for the Wester Ross Readvance in the North‐West Highlands. A synchronous readvance of the British–Irish Ice Sheet (BIIS) towards the end of Greenland Stadial 2a (GS‐2a) (16.9–14.7 ka) is indicated. Thereafter active ice retreat from the flanks of Strath Spey was rapid, occurring within the ∼1 ka uncertainty of the cosmogenic exposure ages. We suggest the advance followed the collapse of the marine parts of the BIIS at ∼16 ka due to conditions of increased precipitation occurring at a time of low temperatures. The rapidity of deglaciation may reflect enhanced Föhn effects caused by the ice dome in the western Grampians. |
author2 |
Carnegie Trust |
format |
Article in Journal/Newspaper |
author |
Hall, Adrian M. Binnie, Steven A. Sugden, David Dunai, Tibor J. Wood, Christina |
author_facet |
Hall, Adrian M. Binnie, Steven A. Sugden, David Dunai, Tibor J. Wood, Christina |
author_sort |
Hall, Adrian M. |
title |
Late readvance and rapid final deglaciation of the last ice sheet in the Grampian Mountains, Scotland |
title_short |
Late readvance and rapid final deglaciation of the last ice sheet in the Grampian Mountains, Scotland |
title_full |
Late readvance and rapid final deglaciation of the last ice sheet in the Grampian Mountains, Scotland |
title_fullStr |
Late readvance and rapid final deglaciation of the last ice sheet in the Grampian Mountains, Scotland |
title_full_unstemmed |
Late readvance and rapid final deglaciation of the last ice sheet in the Grampian Mountains, Scotland |
title_sort |
late readvance and rapid final deglaciation of the last ice sheet in the grampian mountains, scotland |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1002/jqs.2911 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.2911 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.2911 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Journal of Quaternary Science volume 31, issue 8, page 869-878 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.2911 |
container_title |
Journal of Quaternary Science |
container_volume |
31 |
container_issue |
8 |
container_start_page |
e2911 |
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1795032568609898496 |