Mid‐Weichselian interstadial in Kolari, western Finnish Lapland
Finnish Lapland is known as an area where numerous sites with sediments from Pleistocene glacial and interglacial periods occur. Recent sedimentological observations and dating call for reinterpretation of the record, which shows a complicated Mid-Weichselian ice-sheet evolution within the ice-divid...
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2014
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Online Access: | https://curis.ku.dk/portal/da/publications/midweichselian-interstadial-in-kolari-western-finnish-lapland(e6097707-3ef7-4f23-ad86-1f0267a0b689).html https://doi.org/10.1111/bor.12060 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/e6097707-3ef7-4f23-ad86-1f0267a0b689 2024-05-19T07:42:09+00:00 Mid‐Weichselian interstadial in Kolari, western Finnish Lapland Salonen, Veli-Pekka Moreau, Julien Hyttinen, Outi Eskola, Kari O. 2014-01 https://curis.ku.dk/portal/da/publications/midweichselian-interstadial-in-kolari-western-finnish-lapland(e6097707-3ef7-4f23-ad86-1f0267a0b689).html https://doi.org/10.1111/bor.12060 eng eng info:eu-repo/semantics/restrictedAccess Salonen , V-P , Moreau , J , Hyttinen , O & Eskola , K O 2014 , ' Mid‐Weichselian interstadial in Kolari, western Finnish Lapland ' , Boreas , vol. 43 , no. 3 , pp. 627-638 . https://doi.org/10.1111/bor.12060 article 2014 ftcopenhagenunip https://doi.org/10.1111/bor.12060 2024-05-02T00:33:08Z Finnish Lapland is known as an area where numerous sites with sediments from Pleistocene glacial and interglacial periods occur. Recent sedimentological observations and dating call for reinterpretation of the record, which shows a complicated Mid-Weichselian ice-sheet evolution within the ice-divide zone. Here, a large, previously unstudied section from a former Hannukainen iron mine was investigated sedimentologically and dated with optically stimulated luminescence (OSL). Ten sedimentary units were identified displaying a variety of depositional environments (glacial, glaciolacustrine, fluvial and aeolian). They are all – except for the lowermost, deeply weathered till – interpreted to be of Mid- or Late Weichselian/Holocene age. Five OSL samples from fluvial sediments give ages ranging from 55 to 35 ka, indicating two MIS 3 ice-free intervals of unknown duration. The Mid-Weichselian interstadial was interrupted by a re-advance event, which occurred later than 35 ka and caused glaciotectonic deformation, folding and stacking of older sediments. This new evidence emphasizes the importance of the Kolari area when unravelling the complex Late Pleistocene glacial history of northern Finland and adjacent regions Finnish Lapland is known as an area where numerous sites with sediments from Pleistocene glacial and interglacial periods occur. Recent sedimentological observations and dating call for reinterpretation of the record, which shows a complicated Mid-Weichselian ice-sheet evolution within the ice-divide zone. Here, a large, previously unstudied section from a former Hannukainen iron mine was investigated sedimentologically and dated with optically stimulated luminescence (OSL). Ten sedimentary units were identified displaying a variety of depositional environments (glacial, glaciolacustrine, fluvial and aeolian). They are all – except for the lowermost, deeply weathered till – interpreted to be of Mid- or Late Weichselian/Holocene age. Five OSL samples from fluvial sediments give ages ranging from 55 to 35 ... Article in Journal/Newspaper Ice Sheet Northern Finland Lapland University of Copenhagen: Research Boreas 43 3 627 638 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Finnish Lapland is known as an area where numerous sites with sediments from Pleistocene glacial and interglacial periods occur. Recent sedimentological observations and dating call for reinterpretation of the record, which shows a complicated Mid-Weichselian ice-sheet evolution within the ice-divide zone. Here, a large, previously unstudied section from a former Hannukainen iron mine was investigated sedimentologically and dated with optically stimulated luminescence (OSL). Ten sedimentary units were identified displaying a variety of depositional environments (glacial, glaciolacustrine, fluvial and aeolian). They are all – except for the lowermost, deeply weathered till – interpreted to be of Mid- or Late Weichselian/Holocene age. Five OSL samples from fluvial sediments give ages ranging from 55 to 35 ka, indicating two MIS 3 ice-free intervals of unknown duration. The Mid-Weichselian interstadial was interrupted by a re-advance event, which occurred later than 35 ka and caused glaciotectonic deformation, folding and stacking of older sediments. This new evidence emphasizes the importance of the Kolari area when unravelling the complex Late Pleistocene glacial history of northern Finland and adjacent regions Finnish Lapland is known as an area where numerous sites with sediments from Pleistocene glacial and interglacial periods occur. Recent sedimentological observations and dating call for reinterpretation of the record, which shows a complicated Mid-Weichselian ice-sheet evolution within the ice-divide zone. Here, a large, previously unstudied section from a former Hannukainen iron mine was investigated sedimentologically and dated with optically stimulated luminescence (OSL). Ten sedimentary units were identified displaying a variety of depositional environments (glacial, glaciolacustrine, fluvial and aeolian). They are all – except for the lowermost, deeply weathered till – interpreted to be of Mid- or Late Weichselian/Holocene age. Five OSL samples from fluvial sediments give ages ranging from 55 to 35 ... |
format |
Article in Journal/Newspaper |
author |
Salonen, Veli-Pekka Moreau, Julien Hyttinen, Outi Eskola, Kari O. |
spellingShingle |
Salonen, Veli-Pekka Moreau, Julien Hyttinen, Outi Eskola, Kari O. Mid‐Weichselian interstadial in Kolari, western Finnish Lapland |
author_facet |
Salonen, Veli-Pekka Moreau, Julien Hyttinen, Outi Eskola, Kari O. |
author_sort |
Salonen, Veli-Pekka |
title |
Mid‐Weichselian interstadial in Kolari, western Finnish Lapland |
title_short |
Mid‐Weichselian interstadial in Kolari, western Finnish Lapland |
title_full |
Mid‐Weichselian interstadial in Kolari, western Finnish Lapland |
title_fullStr |
Mid‐Weichselian interstadial in Kolari, western Finnish Lapland |
title_full_unstemmed |
Mid‐Weichselian interstadial in Kolari, western Finnish Lapland |
title_sort |
mid‐weichselian interstadial in kolari, western finnish lapland |
publishDate |
2014 |
url |
https://curis.ku.dk/portal/da/publications/midweichselian-interstadial-in-kolari-western-finnish-lapland(e6097707-3ef7-4f23-ad86-1f0267a0b689).html https://doi.org/10.1111/bor.12060 |
genre |
Ice Sheet Northern Finland Lapland |
genre_facet |
Ice Sheet Northern Finland Lapland |
op_source |
Salonen , V-P , Moreau , J , Hyttinen , O & Eskola , K O 2014 , ' Mid‐Weichselian interstadial in Kolari, western Finnish Lapland ' , Boreas , vol. 43 , no. 3 , pp. 627-638 . https://doi.org/10.1111/bor.12060 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/bor.12060 |
container_title |
Boreas |
container_volume |
43 |
container_issue |
3 |
container_start_page |
627 |
op_container_end_page |
638 |
_version_ |
1799481796918771712 |