Weichselian glacial stage in Murchisonfjorden, Nordaustlandet, Svalbard
Compared to the other islands in the Svalbard archipelago, Nordaustlandet offers only limited stratigraphical or sedimentological information on its Quaternary deposits. This article aims to fill the gap by presenting new results from glacial geological, sedimentological and chronological studies in...
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crwiley:10.1111/j.1502-3885.2009.00092.x 2024-09-15T18:07:57+00:00 Weichselian glacial stage in Murchisonfjorden, Nordaustlandet, Svalbard KAAKINEN, ANU SALONEN, VELI‐PEKKA KUBISCHTA, FRAUKE ESKOLA, KARI O. OINONEN, MARKKU 2009 http://dx.doi.org/10.1111/j.1502-3885.2009.00092.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2009.00092.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2009.00092.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 38, issue 4, page 718-729 ISSN 0300-9483 1502-3885 journal-article 2009 crwiley https://doi.org/10.1111/j.1502-3885.2009.00092.x 2024-08-09T04:28:56Z Compared to the other islands in the Svalbard archipelago, Nordaustlandet offers only limited stratigraphical or sedimentological information on its Quaternary deposits. This article aims to fill the gap by presenting new results from glacial geological, sedimentological and chronological studies in the southern Murchisonfjorden area. Field data include reconnaissance mapping and detailed logging of vertical sections along cliff‐face outcrops a few metres high adjacent to the present‐day shoreline. Combined with OSL and AMS age determinations, these data provide evidence of three successive Weichselian sequences, each represented by the deposition of till followed by the accumulation of shallow marine deposits. Contrary to earlier conclusions, this study demonstrates that the area was occupied by a Late Weichselian glacier (LWG), although the LWG till is thin and discontinuous. Interstadial sublittoral sand related to the Mid‐Weichselian interstadial was dated to 38–40 kyr, and an Early Weichselian interstadial to 76–80 kyr. The preservation of older sediments, multiple striae generations and abundant observations of weathered local bedrock material indicate weak glacial erosion within the study area. We suggest that the Late Weichselian glacier was relatively inactive and remained mainly cold‐based until the deglaciation. The Isvika sections can be considered a new key site that offers further potential to improve our understanding of the Weichselian stage within the northwestern sector of the Barents–Kara Ice Sheet. Article in Journal/Newspaper glacier Ice Sheet Nordaustlandet Svalbard Wiley Online Library Boreas 38 4 718 729 |
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Wiley Online Library |
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English |
description |
Compared to the other islands in the Svalbard archipelago, Nordaustlandet offers only limited stratigraphical or sedimentological information on its Quaternary deposits. This article aims to fill the gap by presenting new results from glacial geological, sedimentological and chronological studies in the southern Murchisonfjorden area. Field data include reconnaissance mapping and detailed logging of vertical sections along cliff‐face outcrops a few metres high adjacent to the present‐day shoreline. Combined with OSL and AMS age determinations, these data provide evidence of three successive Weichselian sequences, each represented by the deposition of till followed by the accumulation of shallow marine deposits. Contrary to earlier conclusions, this study demonstrates that the area was occupied by a Late Weichselian glacier (LWG), although the LWG till is thin and discontinuous. Interstadial sublittoral sand related to the Mid‐Weichselian interstadial was dated to 38–40 kyr, and an Early Weichselian interstadial to 76–80 kyr. The preservation of older sediments, multiple striae generations and abundant observations of weathered local bedrock material indicate weak glacial erosion within the study area. We suggest that the Late Weichselian glacier was relatively inactive and remained mainly cold‐based until the deglaciation. The Isvika sections can be considered a new key site that offers further potential to improve our understanding of the Weichselian stage within the northwestern sector of the Barents–Kara Ice Sheet. |
format |
Article in Journal/Newspaper |
author |
KAAKINEN, ANU SALONEN, VELI‐PEKKA KUBISCHTA, FRAUKE ESKOLA, KARI O. OINONEN, MARKKU |
spellingShingle |
KAAKINEN, ANU SALONEN, VELI‐PEKKA KUBISCHTA, FRAUKE ESKOLA, KARI O. OINONEN, MARKKU Weichselian glacial stage in Murchisonfjorden, Nordaustlandet, Svalbard |
author_facet |
KAAKINEN, ANU SALONEN, VELI‐PEKKA KUBISCHTA, FRAUKE ESKOLA, KARI O. OINONEN, MARKKU |
author_sort |
KAAKINEN, ANU |
title |
Weichselian glacial stage in Murchisonfjorden, Nordaustlandet, Svalbard |
title_short |
Weichselian glacial stage in Murchisonfjorden, Nordaustlandet, Svalbard |
title_full |
Weichselian glacial stage in Murchisonfjorden, Nordaustlandet, Svalbard |
title_fullStr |
Weichselian glacial stage in Murchisonfjorden, Nordaustlandet, Svalbard |
title_full_unstemmed |
Weichselian glacial stage in Murchisonfjorden, Nordaustlandet, Svalbard |
title_sort |
weichselian glacial stage in murchisonfjorden, nordaustlandet, svalbard |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1111/j.1502-3885.2009.00092.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.2009.00092.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.2009.00092.x |
genre |
glacier Ice Sheet Nordaustlandet Svalbard |
genre_facet |
glacier Ice Sheet Nordaustlandet Svalbard |
op_source |
Boreas volume 38, issue 4, page 718-729 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.2009.00092.x |
container_title |
Boreas |
container_volume |
38 |
container_issue |
4 |
container_start_page |
718 |
op_container_end_page |
729 |
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1810445303197728768 |