The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm
Conventional Optically Stimulated Luminescence (OSL) dating using the equivalent dose distributions of 8 mm aliquots have been extended to key stratigraphical sites in southernmost Sweden and the island of Bornholm. The objective has been to bridge the lack of an independent chronology, which might...
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2006
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Online Access: | https://pure.au.dk/portal/da/publications/the-first-independent-chronology-for-middle-and-late-weichselian-sediments-from-southern-sweden-and-the-island-of-bornholm(6d72260a-b97c-4077-a4a3-1ac569463dde).html https://doi.org/10.1080/11035890601283209 http://www.scopus.com/inward/record.url?scp=33750559157&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/6d72260a-b97c-4077-a4a3-1ac569463dde 2023-12-31T10:08:02+01:00 The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm Kjær, Kurt Henrik Lagerlund, Erik Adrielsson, Lena Thomas, Puthusserry J. Murray, Andrew Sandgren, Per 2006-01-01 https://pure.au.dk/portal/da/publications/the-first-independent-chronology-for-middle-and-late-weichselian-sediments-from-southern-sweden-and-the-island-of-bornholm(6d72260a-b97c-4077-a4a3-1ac569463dde).html https://doi.org/10.1080/11035890601283209 http://www.scopus.com/inward/record.url?scp=33750559157&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/da/publications/the-first-independent-chronology-for-middle-and-late-weichselian-sediments-from-southern-sweden-and-the-island-of-bornholm(6d72260a-b97c-4077-a4a3-1ac569463dde).html info:eu-repo/semantics/restrictedAccess Kjær , K H , Lagerlund , E , Adrielsson , L , Thomas , P J , Murray , A & Sandgren , P 2006 , ' The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm ' , GFF , vol. 128 , no. 3 , pp. 209-220 . https://doi.org/10.1080/11035890601283209 Bornholm Chronology Deglaciation Luminescence dating Scandinavian ice sheet Skåne Weichselian glaciation article 2006 ftuniaarhuspubl https://doi.org/10.1080/11035890601283209 2023-12-07T00:03:55Z Conventional Optically Stimulated Luminescence (OSL) dating using the equivalent dose distributions of 8 mm aliquots have been extended to key stratigraphical sites in southernmost Sweden and the island of Bornholm. The objective has been to bridge the lack of an independent chronology, which might catalyze a new understanding of the ice flow patterns related to the initiation of the Last Glacial Maximum, and the stratigraphical development during the deglaciation sequence. Sediments from proximal environments are usually 10-15 kyr older than expected from regional stratigraphical correlations and radiocarbon dates of mammoth tusks. We propose that OSL signals are inherited from reworked sediments that were sufficiently bleached prior to glacial or glaciofluvial transportation and deposition. Sediments from distal and beach environments seem to indicate proper depositional ages. Thus, the main Weichselian stadial was preceded by almost 20 kyr of ice free conditions, succeeded by an ice advance from south-southeast before northeasterly ice flow predominated. Major inconsistencies still exists for the final deglaciation. Two distinct environmental reconstructions of the uppermost diamict at two separate sites, both superimposed on a periglacial surface, predict either deposition during subaquatic conditions associated with drifting icebergs after 16 kyr or subglacial sedimentation associated with an ice advance in Öresund. It remains unsolved whether the periglacial surface at the two sites can be correlated or if they represent two different stratigraphical levels. In perspective, the introduction of OSL dates in Skåne has identified the periglacial marker horizon or horizons as targets for future intensive dating. Article in Journal/Newspaper Ice Sheet Aarhus University: Research GFF 128 3 209 220 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Bornholm Chronology Deglaciation Luminescence dating Scandinavian ice sheet Skåne Weichselian glaciation |
spellingShingle |
Bornholm Chronology Deglaciation Luminescence dating Scandinavian ice sheet Skåne Weichselian glaciation Kjær, Kurt Henrik Lagerlund, Erik Adrielsson, Lena Thomas, Puthusserry J. Murray, Andrew Sandgren, Per The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm |
topic_facet |
Bornholm Chronology Deglaciation Luminescence dating Scandinavian ice sheet Skåne Weichselian glaciation |
description |
Conventional Optically Stimulated Luminescence (OSL) dating using the equivalent dose distributions of 8 mm aliquots have been extended to key stratigraphical sites in southernmost Sweden and the island of Bornholm. The objective has been to bridge the lack of an independent chronology, which might catalyze a new understanding of the ice flow patterns related to the initiation of the Last Glacial Maximum, and the stratigraphical development during the deglaciation sequence. Sediments from proximal environments are usually 10-15 kyr older than expected from regional stratigraphical correlations and radiocarbon dates of mammoth tusks. We propose that OSL signals are inherited from reworked sediments that were sufficiently bleached prior to glacial or glaciofluvial transportation and deposition. Sediments from distal and beach environments seem to indicate proper depositional ages. Thus, the main Weichselian stadial was preceded by almost 20 kyr of ice free conditions, succeeded by an ice advance from south-southeast before northeasterly ice flow predominated. Major inconsistencies still exists for the final deglaciation. Two distinct environmental reconstructions of the uppermost diamict at two separate sites, both superimposed on a periglacial surface, predict either deposition during subaquatic conditions associated with drifting icebergs after 16 kyr or subglacial sedimentation associated with an ice advance in Öresund. It remains unsolved whether the periglacial surface at the two sites can be correlated or if they represent two different stratigraphical levels. In perspective, the introduction of OSL dates in Skåne has identified the periglacial marker horizon or horizons as targets for future intensive dating. |
format |
Article in Journal/Newspaper |
author |
Kjær, Kurt Henrik Lagerlund, Erik Adrielsson, Lena Thomas, Puthusserry J. Murray, Andrew Sandgren, Per |
author_facet |
Kjær, Kurt Henrik Lagerlund, Erik Adrielsson, Lena Thomas, Puthusserry J. Murray, Andrew Sandgren, Per |
author_sort |
Kjær, Kurt Henrik |
title |
The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm |
title_short |
The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm |
title_full |
The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm |
title_fullStr |
The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm |
title_full_unstemmed |
The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm |
title_sort |
first independent chronology for middle and late weichselian sediments from southern sweden and the island of bornholm |
publishDate |
2006 |
url |
https://pure.au.dk/portal/da/publications/the-first-independent-chronology-for-middle-and-late-weichselian-sediments-from-southern-sweden-and-the-island-of-bornholm(6d72260a-b97c-4077-a4a3-1ac569463dde).html https://doi.org/10.1080/11035890601283209 http://www.scopus.com/inward/record.url?scp=33750559157&partnerID=8YFLogxK |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Kjær , K H , Lagerlund , E , Adrielsson , L , Thomas , P J , Murray , A & Sandgren , P 2006 , ' The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm ' , GFF , vol. 128 , no. 3 , pp. 209-220 . https://doi.org/10.1080/11035890601283209 |
op_relation |
https://pure.au.dk/portal/da/publications/the-first-independent-chronology-for-middle-and-late-weichselian-sediments-from-southern-sweden-and-the-island-of-bornholm(6d72260a-b97c-4077-a4a3-1ac569463dde).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1080/11035890601283209 |
container_title |
GFF |
container_volume |
128 |
container_issue |
3 |
container_start_page |
209 |
op_container_end_page |
220 |
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1786840608596295680 |