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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Taylor & Francis
2006
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ftulundlup:oai:lup.lub.lu.se:99207618-5720-4292-984b-a0d29390578c 2023-05-15T16:41:17+02:00 The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm Kjaer, Kurt Lagerlund, Erik Adrielsson, Lena Thomas, Puthusserry Murray, Andrew Sandgren, Per 2006 https://lup.lub.lu.se/record/378426 eng eng Taylor & Francis https://lup.lub.lu.se/record/378426 wos:000241830800001 scopus:33750559157 GFF; 128(3), pp 209-220 (2006) ISSN: 2000-0863 Geology Bornholm Skane chronology deglaciation Luminescence dating Weichselian glaciation Scandinavian Ice Sheet contributiontojournal/article info:eu-repo/semantics/article text 2006 ftulundlup 2023-02-01T23:32:59Z 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 Oresund. 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 Skane has identified the periglacial marker horizon or horizons as targets for future intensive dating. Article in Journal/Newspaper Ice Sheet Lund University Publications (LUP) |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology Bornholm Skane chronology deglaciation Luminescence dating Weichselian glaciation Scandinavian Ice Sheet |
spellingShingle |
Geology Bornholm Skane chronology deglaciation Luminescence dating Weichselian glaciation Scandinavian Ice Sheet Kjaer, Kurt Lagerlund, Erik Adrielsson, Lena Thomas, Puthusserry Murray, Andrew Sandgren, Per The first independent chronology for Middle and Late Weichselian sediments from southern Sweden and the Island of Bornholm |
topic_facet |
Geology Bornholm Skane chronology deglaciation Luminescence dating Weichselian glaciation Scandinavian Ice Sheet |
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 Oresund. 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 Skane has identified the periglacial marker horizon or horizons as targets for future intensive dating. |
format |
Article in Journal/Newspaper |
author |
Kjaer, Kurt Lagerlund, Erik Adrielsson, Lena Thomas, Puthusserry Murray, Andrew Sandgren, Per |
author_facet |
Kjaer, Kurt Lagerlund, Erik Adrielsson, Lena Thomas, Puthusserry Murray, Andrew Sandgren, Per |
author_sort |
Kjaer, Kurt |
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 |
publisher |
Taylor & Francis |
publishDate |
2006 |
url |
https://lup.lub.lu.se/record/378426 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
GFF; 128(3), pp 209-220 (2006) ISSN: 2000-0863 |
op_relation |
https://lup.lub.lu.se/record/378426 wos:000241830800001 scopus:33750559157 |
_version_ |
1766031710564122624 |