Chronology and extent of the Lofoten–Vesterålen sector of the Scandinavian Ice Sheet from 26 to 16 cal. ka BP
The interplay between the onshore and offshore areas during the Last Glacial Maximum and the deglaciation of the Scandinavian Ice Sheet is poorly known. In this paper we present new results on the glacial morphology, stratigraphy and chronology of Andøya, and the glacial morphology of the nearby con...
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crwiley:10.1111/bor.12118 2024-09-15T17:39:25+00:00 Chronology and extent of the Lofoten–Vesterålen sector of the Scandinavian Ice Sheet from 26 to 16 cal. ka BP Vorren, Tore O. Rydningen, Tom Arne Baeten, Nicole J. Laberg, Jan Sverre University of Tromsø Research Council of Norway through the Norpast, Loslope and Democen projects 2015 http://dx.doi.org/10.1111/bor.12118 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12118 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12118 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 44, issue 3, page 445-458 ISSN 0300-9483 1502-3885 journal-article 2015 crwiley https://doi.org/10.1111/bor.12118 2024-08-06T04:18:21Z The interplay between the onshore and offshore areas during the Last Glacial Maximum and the deglaciation of the Scandinavian Ice Sheet is poorly known. In this paper we present new results on the glacial morphology, stratigraphy and chronology of Andøya, and the glacial morphology of the nearby continental shelf off Lofoten–Vesterålen. The results were used to develop a new model for the timing and extent of the Scandinavian Ice Sheet in the study area during the local last glacial maximum ( LLGM ) (26 to 16 cal. ka BP ). We subdivided the LLGM in this area into five glacial events: before 24, c. 23 to 22.2, 22.2 to c. 18.6, 18 to 17.5, and 16.9–16.3 cal. ka BP . The extent of the Scandinavian Ice Sheet during these various events was reconstructed for the shelf areas off Lofoten, Vesterålen and Troms. Icecaps survived in coastal areas of Vesterålen–Lofoten after the shelf was deglaciated and off Andøya ice flowed landwards from the shelf. During the LLGM the relative sea level was stable until 18.5 cal. ka BP , and thereafter there was a sea‐level drop on Andøya. Thus, relative sea level (i.e. a sea level rise) does not seem to be a driving mechanism for ice‐margin retreat in this area but the fall in sea level may have had some importance for the grounding episodes on the banks during deglaciation. The positions of the grounding zone wedges ( GZW s) in the troughs are related to the morphology as they are often located where the troughs narrow. Article in Journal/Newspaper Andøya Ice Sheet Lofoten Vesterålen Troms Wiley Online Library Boreas 44 3 445 458 |
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English |
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The interplay between the onshore and offshore areas during the Last Glacial Maximum and the deglaciation of the Scandinavian Ice Sheet is poorly known. In this paper we present new results on the glacial morphology, stratigraphy and chronology of Andøya, and the glacial morphology of the nearby continental shelf off Lofoten–Vesterålen. The results were used to develop a new model for the timing and extent of the Scandinavian Ice Sheet in the study area during the local last glacial maximum ( LLGM ) (26 to 16 cal. ka BP ). We subdivided the LLGM in this area into five glacial events: before 24, c. 23 to 22.2, 22.2 to c. 18.6, 18 to 17.5, and 16.9–16.3 cal. ka BP . The extent of the Scandinavian Ice Sheet during these various events was reconstructed for the shelf areas off Lofoten, Vesterålen and Troms. Icecaps survived in coastal areas of Vesterålen–Lofoten after the shelf was deglaciated and off Andøya ice flowed landwards from the shelf. During the LLGM the relative sea level was stable until 18.5 cal. ka BP , and thereafter there was a sea‐level drop on Andøya. Thus, relative sea level (i.e. a sea level rise) does not seem to be a driving mechanism for ice‐margin retreat in this area but the fall in sea level may have had some importance for the grounding episodes on the banks during deglaciation. The positions of the grounding zone wedges ( GZW s) in the troughs are related to the morphology as they are often located where the troughs narrow. |
author2 |
University of Tromsø Research Council of Norway through the Norpast, Loslope and Democen projects |
format |
Article in Journal/Newspaper |
author |
Vorren, Tore O. Rydningen, Tom Arne Baeten, Nicole J. Laberg, Jan Sverre |
spellingShingle |
Vorren, Tore O. Rydningen, Tom Arne Baeten, Nicole J. Laberg, Jan Sverre Chronology and extent of the Lofoten–Vesterålen sector of the Scandinavian Ice Sheet from 26 to 16 cal. ka BP |
author_facet |
Vorren, Tore O. Rydningen, Tom Arne Baeten, Nicole J. Laberg, Jan Sverre |
author_sort |
Vorren, Tore O. |
title |
Chronology and extent of the Lofoten–Vesterålen sector of the Scandinavian Ice Sheet from 26 to 16 cal. ka BP |
title_short |
Chronology and extent of the Lofoten–Vesterålen sector of the Scandinavian Ice Sheet from 26 to 16 cal. ka BP |
title_full |
Chronology and extent of the Lofoten–Vesterålen sector of the Scandinavian Ice Sheet from 26 to 16 cal. ka BP |
title_fullStr |
Chronology and extent of the Lofoten–Vesterålen sector of the Scandinavian Ice Sheet from 26 to 16 cal. ka BP |
title_full_unstemmed |
Chronology and extent of the Lofoten–Vesterålen sector of the Scandinavian Ice Sheet from 26 to 16 cal. ka BP |
title_sort |
chronology and extent of the lofoten–vesterålen sector of the scandinavian ice sheet from 26 to 16 cal. ka bp |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1111/bor.12118 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fbor.12118 https://onlinelibrary.wiley.com/doi/pdf/10.1111/bor.12118 |
genre |
Andøya Ice Sheet Lofoten Vesterålen Troms |
genre_facet |
Andøya Ice Sheet Lofoten Vesterålen Troms |
op_source |
Boreas volume 44, issue 3, page 445-458 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/bor.12118 |
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Boreas |
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44 |
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3 |
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445 |
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458 |
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1810479787298258944 |