Age and extent of the Scandinavian ice sheet in northwest Russia
The last glacial maximum (LGM) of the Scandinavian ice sheet in the Arkhangelsk region has been identified morphologically as ridges and hummocks in an otherwise flat topography. Stratigraphically the limit is marked by the presence of till above Mikhulinian (last interglacial) sediments inside the...
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1999
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ftuniaarhuspubl:oai:pure.atira.dk:publications/6af533f1-eb50-4522-ba0f-d6a11604058b 2023-05-15T15:23:39+02:00 Age and extent of the Scandinavian ice sheet in northwest Russia Larsen, Eiliv Lyså, Astrid Demidov, Igor Funder, Svend Houmark-Nielsen, Michael Kjær, Kurt H. Murray, Andrew S. 1999-03 https://pure.au.dk/portal/da/publications/age-and-extent-of-the-scandinavian-ice-sheet-in-northwest-russia(6af533f1-eb50-4522-ba0f-d6a11604058b).html https://doi.org/10.1111/j.1502-3885.1999.tb00209.x http://www.scopus.com/inward/record.url?scp=0033102194&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Larsen , E , Lyså , A , Demidov , I , Funder , S , Houmark-Nielsen , M , Kjær , K H & Murray , A S 1999 , ' Age and extent of the Scandinavian ice sheet in northwest Russia ' , Boreas , vol. 28 , no. 1 , pp. 115-132 . https://doi.org/10.1111/j.1502-3885.1999.tb00209.x article 1999 ftuniaarhuspubl https://doi.org/10.1111/j.1502-3885.1999.tb00209.x 2022-02-02T23:50:41Z The last glacial maximum (LGM) of the Scandinavian ice sheet in the Arkhangelsk region has been identified morphologically as ridges and hummocks in an otherwise flat topography. Stratigraphically the limit is marked by the presence of till above Mikhulinian (last interglacial) sediments inside the ridges and by the absence of till outside the ridges. During the LGM, ice flowed into the region from the north and northwest forming a lobe in the Dvina-Vaga depression. The continuation northward, northeast of Arkhangelsk, is still somewhat uncertain, but evidence suggests that the outer margin of the Scandinavian ice sheet was situated in the Mezen drainage basin. Luminescence and radiocarbon dates suggest that the maximum position was attained after some 17 ka ago, and that deglaciation started close to 15 ka ago. This age for the maximum position is younger than the maximum position in the western peripheral areas of the Scandinavian ice sheet. This may be accounted for by initial ice build-up in the west followed by a successive migration of the ice divide(s) to the east as ice growth continued. Deglaciation was either by lateral retreat orisolation of dead ice masses causing areal downwasting. Article in Journal/Newspaper Arkhangelsk dvina Ice Sheet Mezen Mezen' Northwest Russia Aarhus University: Research Vaga ENVELOPE(42.875,42.875,62.809,62.809) Boreas 28 1 115 132 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
description |
The last glacial maximum (LGM) of the Scandinavian ice sheet in the Arkhangelsk region has been identified morphologically as ridges and hummocks in an otherwise flat topography. Stratigraphically the limit is marked by the presence of till above Mikhulinian (last interglacial) sediments inside the ridges and by the absence of till outside the ridges. During the LGM, ice flowed into the region from the north and northwest forming a lobe in the Dvina-Vaga depression. The continuation northward, northeast of Arkhangelsk, is still somewhat uncertain, but evidence suggests that the outer margin of the Scandinavian ice sheet was situated in the Mezen drainage basin. Luminescence and radiocarbon dates suggest that the maximum position was attained after some 17 ka ago, and that deglaciation started close to 15 ka ago. This age for the maximum position is younger than the maximum position in the western peripheral areas of the Scandinavian ice sheet. This may be accounted for by initial ice build-up in the west followed by a successive migration of the ice divide(s) to the east as ice growth continued. Deglaciation was either by lateral retreat orisolation of dead ice masses causing areal downwasting. |
format |
Article in Journal/Newspaper |
author |
Larsen, Eiliv Lyså, Astrid Demidov, Igor Funder, Svend Houmark-Nielsen, Michael Kjær, Kurt H. Murray, Andrew S. |
spellingShingle |
Larsen, Eiliv Lyså, Astrid Demidov, Igor Funder, Svend Houmark-Nielsen, Michael Kjær, Kurt H. Murray, Andrew S. Age and extent of the Scandinavian ice sheet in northwest Russia |
author_facet |
Larsen, Eiliv Lyså, Astrid Demidov, Igor Funder, Svend Houmark-Nielsen, Michael Kjær, Kurt H. Murray, Andrew S. |
author_sort |
Larsen, Eiliv |
title |
Age and extent of the Scandinavian ice sheet in northwest Russia |
title_short |
Age and extent of the Scandinavian ice sheet in northwest Russia |
title_full |
Age and extent of the Scandinavian ice sheet in northwest Russia |
title_fullStr |
Age and extent of the Scandinavian ice sheet in northwest Russia |
title_full_unstemmed |
Age and extent of the Scandinavian ice sheet in northwest Russia |
title_sort |
age and extent of the scandinavian ice sheet in northwest russia |
publishDate |
1999 |
url |
https://pure.au.dk/portal/da/publications/age-and-extent-of-the-scandinavian-ice-sheet-in-northwest-russia(6af533f1-eb50-4522-ba0f-d6a11604058b).html https://doi.org/10.1111/j.1502-3885.1999.tb00209.x http://www.scopus.com/inward/record.url?scp=0033102194&partnerID=8YFLogxK |
long_lat |
ENVELOPE(42.875,42.875,62.809,62.809) |
geographic |
Vaga |
geographic_facet |
Vaga |
genre |
Arkhangelsk dvina Ice Sheet Mezen Mezen' Northwest Russia |
genre_facet |
Arkhangelsk dvina Ice Sheet Mezen Mezen' Northwest Russia |
op_source |
Larsen , E , Lyså , A , Demidov , I , Funder , S , Houmark-Nielsen , M , Kjær , K H & Murray , A S 1999 , ' Age and extent of the Scandinavian ice sheet in northwest Russia ' , Boreas , vol. 28 , no. 1 , pp. 115-132 . https://doi.org/10.1111/j.1502-3885.1999.tb00209.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1502-3885.1999.tb00209.x |
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Boreas |
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28 |
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1 |
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132 |
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