The Keiva ice marginal zone on the Kola Peninsula, northwest Russia: a key component for reconstructing the palaeoglaciology of the northeastern Fennoscandian Ice Sheet
One of the key elements in reconstructing the palaeoglaciology of the northeastern sector of the Fennoscandian Ice Sheet is the Keiva ice marginal zone (KIZ) along the southern and eastern coast of Kola Peninsula, including the Keiva I and II moraines. From detailed geomorphological mapping of the K...
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crwiley:10.1080/03009480701317488 2024-09-15T18:06:04+00:00 The Keiva ice marginal zone on the Kola Peninsula, northwest Russia: a key component for reconstructing the palaeoglaciology of the northeastern Fennoscandian Ice Sheet Hāttestrand, Clas Kolka, Vasili Stroeven, Arjen P. 2007 http://dx.doi.org/10.1080/03009480701317488 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1080%2F03009480701317488 https://onlinelibrary.wiley.com/doi/pdf/10.1080/03009480701317488 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 36, issue 4, page 352-370 ISSN 0300-9483 1502-3885 journal-article 2007 crwiley https://doi.org/10.1080/03009480701317488 2024-07-25T04:23:21Z One of the key elements in reconstructing the palaeoglaciology of the northeastern sector of the Fennoscandian Ice Sheet is the Keiva ice marginal zone (KIZ) along the southern and eastern coast of Kola Peninsula, including the Keiva I and II moraines. From detailed geomorphological mapping of the KIZ, primarily using aerial photographs and satellite images, combined with fieldwork, we observed the following. (1) The moraines display ice contact features on both the Kola side and the White Sea side along its entire length. (2) The Keiva II moraine is sloping along its length from c. 100 m a.s.l. in the west (Varzuga River) to c. 250 m a.s.l. in the east (Ponoy River). (3) The KIZ was partly overrun and fragmented by erosive White Sea‐based ice after formation. From these observations we conclude that the KIZ is not a synchronous feature formed along the lateral side of a White Sea‐based ice lobe. If it was, the moraines should have a reversed slope. Rather, we interpret it to be time transgressive, formed at a northeastward‐migrating junction between a warm‐based Fennoscandian Ice Sheet expanding from the west and southwest into the White Sea depression, and a sluggish cold‐based ice mass centred over eastern Kola Peninsula. In contrast to earlier reconstructions, we find it unlikely that an ice expansion of this magnitude was a mere re‐advance during the deglaciation. Instead, we propose that the KIZ was formed during a major expansion of a Fennoscandian Ice Sheet at a time pre‐dating the Last Glacial Maximum. Article in Journal/Newspaper Fennoscandian Ice Sheet kola peninsula Northwest Russia White Sea Wiley Online Library Boreas 36 4 352 370 |
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English |
description |
One of the key elements in reconstructing the palaeoglaciology of the northeastern sector of the Fennoscandian Ice Sheet is the Keiva ice marginal zone (KIZ) along the southern and eastern coast of Kola Peninsula, including the Keiva I and II moraines. From detailed geomorphological mapping of the KIZ, primarily using aerial photographs and satellite images, combined with fieldwork, we observed the following. (1) The moraines display ice contact features on both the Kola side and the White Sea side along its entire length. (2) The Keiva II moraine is sloping along its length from c. 100 m a.s.l. in the west (Varzuga River) to c. 250 m a.s.l. in the east (Ponoy River). (3) The KIZ was partly overrun and fragmented by erosive White Sea‐based ice after formation. From these observations we conclude that the KIZ is not a synchronous feature formed along the lateral side of a White Sea‐based ice lobe. If it was, the moraines should have a reversed slope. Rather, we interpret it to be time transgressive, formed at a northeastward‐migrating junction between a warm‐based Fennoscandian Ice Sheet expanding from the west and southwest into the White Sea depression, and a sluggish cold‐based ice mass centred over eastern Kola Peninsula. In contrast to earlier reconstructions, we find it unlikely that an ice expansion of this magnitude was a mere re‐advance during the deglaciation. Instead, we propose that the KIZ was formed during a major expansion of a Fennoscandian Ice Sheet at a time pre‐dating the Last Glacial Maximum. |
format |
Article in Journal/Newspaper |
author |
Hāttestrand, Clas Kolka, Vasili Stroeven, Arjen P. |
spellingShingle |
Hāttestrand, Clas Kolka, Vasili Stroeven, Arjen P. The Keiva ice marginal zone on the Kola Peninsula, northwest Russia: a key component for reconstructing the palaeoglaciology of the northeastern Fennoscandian Ice Sheet |
author_facet |
Hāttestrand, Clas Kolka, Vasili Stroeven, Arjen P. |
author_sort |
Hāttestrand, Clas |
title |
The Keiva ice marginal zone on the Kola Peninsula, northwest Russia: a key component for reconstructing the palaeoglaciology of the northeastern Fennoscandian Ice Sheet |
title_short |
The Keiva ice marginal zone on the Kola Peninsula, northwest Russia: a key component for reconstructing the palaeoglaciology of the northeastern Fennoscandian Ice Sheet |
title_full |
The Keiva ice marginal zone on the Kola Peninsula, northwest Russia: a key component for reconstructing the palaeoglaciology of the northeastern Fennoscandian Ice Sheet |
title_fullStr |
The Keiva ice marginal zone on the Kola Peninsula, northwest Russia: a key component for reconstructing the palaeoglaciology of the northeastern Fennoscandian Ice Sheet |
title_full_unstemmed |
The Keiva ice marginal zone on the Kola Peninsula, northwest Russia: a key component for reconstructing the palaeoglaciology of the northeastern Fennoscandian Ice Sheet |
title_sort |
keiva ice marginal zone on the kola peninsula, northwest russia: a key component for reconstructing the palaeoglaciology of the northeastern fennoscandian ice sheet |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1080/03009480701317488 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1080%2F03009480701317488 https://onlinelibrary.wiley.com/doi/pdf/10.1080/03009480701317488 |
genre |
Fennoscandian Ice Sheet kola peninsula Northwest Russia White Sea |
genre_facet |
Fennoscandian Ice Sheet kola peninsula Northwest Russia White Sea |
op_source |
Boreas volume 36, issue 4, page 352-370 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1080/03009480701317488 |
container_title |
Boreas |
container_volume |
36 |
container_issue |
4 |
container_start_page |
352 |
op_container_end_page |
370 |
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1810443567448981504 |