A new concept of glaciation in Lewis and Harris, Outer Hebrides
Synopsis Contrary to previous ideas, it is suggested that Harris and the major part of Lewis were covered by a large local ice cap during the last glacial phase. Local glaciers from central Lewis and the interior of North Lewis moving over the eastern fringe across the Eye peninsula and towards the...
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Cambridge University Press (CUP)
1979
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Online Access: | http://dx.doi.org/10.1017/s0269727000012665 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0269727000012665 |
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crcambridgeupr:10.1017/s0269727000012665 2024-03-03T08:45:19+00:00 A new concept of glaciation in Lewis and Harris, Outer Hebrides von Weymarn, J. A. 1979 http://dx.doi.org/10.1017/s0269727000012665 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0269727000012665 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences volume 77, page 97-105 ISSN 0269-7270 2053-5910 General Medicine journal-article 1979 crcambridgeupr https://doi.org/10.1017/s0269727000012665 2024-02-08T08:43:22Z Synopsis Contrary to previous ideas, it is suggested that Harris and the major part of Lewis were covered by a large local ice cap during the last glacial phase. Local glaciers from central Lewis and the interior of North Lewis moving over the eastern fringe across the Eye peninsula and towards the north-west coast appear to have overridden and redistributed deposits from earlier glaciers of external origin. There is some evidence that the northern tip of Lewis and the Tolsta Head peninsula were also invaded by external ice during the final glacial phase. The application of a theoretical icesheet-surface profile substantiates the concept that Scottish mainland ice at its maximum advanced over northern parts of the island. According to the C-14 date of an organic layer beneath glacial till at Tolsta Head the last incidence of external and/or local ice in the island occurred after 27,300 years BP. Deglaciation phenomena at Uig, south-west Lewis, mark an earlier stage in the dissolution of the ice cap, while hummocky moraine in the mountain and submountain zone indicate the retention or renewed formation of valley glaciers during the late Devensian. Article in Journal/Newspaper Ice cap Cambridge University Press Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 77 97 105 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine von Weymarn, J. A. A new concept of glaciation in Lewis and Harris, Outer Hebrides |
topic_facet |
General Medicine |
description |
Synopsis Contrary to previous ideas, it is suggested that Harris and the major part of Lewis were covered by a large local ice cap during the last glacial phase. Local glaciers from central Lewis and the interior of North Lewis moving over the eastern fringe across the Eye peninsula and towards the north-west coast appear to have overridden and redistributed deposits from earlier glaciers of external origin. There is some evidence that the northern tip of Lewis and the Tolsta Head peninsula were also invaded by external ice during the final glacial phase. The application of a theoretical icesheet-surface profile substantiates the concept that Scottish mainland ice at its maximum advanced over northern parts of the island. According to the C-14 date of an organic layer beneath glacial till at Tolsta Head the last incidence of external and/or local ice in the island occurred after 27,300 years BP. Deglaciation phenomena at Uig, south-west Lewis, mark an earlier stage in the dissolution of the ice cap, while hummocky moraine in the mountain and submountain zone indicate the retention or renewed formation of valley glaciers during the late Devensian. |
format |
Article in Journal/Newspaper |
author |
von Weymarn, J. A. |
author_facet |
von Weymarn, J. A. |
author_sort |
von Weymarn, J. A. |
title |
A new concept of glaciation in Lewis and Harris, Outer Hebrides |
title_short |
A new concept of glaciation in Lewis and Harris, Outer Hebrides |
title_full |
A new concept of glaciation in Lewis and Harris, Outer Hebrides |
title_fullStr |
A new concept of glaciation in Lewis and Harris, Outer Hebrides |
title_full_unstemmed |
A new concept of glaciation in Lewis and Harris, Outer Hebrides |
title_sort |
new concept of glaciation in lewis and harris, outer hebrides |
publisher |
Cambridge University Press (CUP) |
publishDate |
1979 |
url |
http://dx.doi.org/10.1017/s0269727000012665 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0269727000012665 |
genre |
Ice cap |
genre_facet |
Ice cap |
op_source |
Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences volume 77, page 97-105 ISSN 0269-7270 2053-5910 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0269727000012665 |
container_title |
Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences |
container_volume |
77 |
container_start_page |
97 |
op_container_end_page |
105 |
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1792500846050672640 |