Chronology of the last ice sheet decay on the southern Baltic area based on dating of glaciofluvial and ice-dammed lake deposits
The paper presents the results of the first OSL dating of glaciofluvial and ice-marginal lake sediments which occur between end moraines of the Słupsk Bank and the Polish coast. The sand and gravel of glaciofluvial deltas on the Słupsk Bank were deposited most likely during a period from 14.3 ±1.2 t...
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Polish Geological Institute-National Research Institute
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ftjgq:oai:geojournals.pgi.gov.pl:article/26135 2024-09-15T18:12:16+00:00 Chronology of the last ice sheet decay on the southern Baltic area based on dating of glaciofluvial and ice-dammed lake deposits Uścinowicz, Szymon 2019-04-26 application/pdf https://gq.pgi.gov.pl/article/view/26135 https://doi.org/10.7306/gq.1453 eng eng Polish Geological Institute-National Research Institute https://gq.pgi.gov.pl/article/view/26135/pdf 10.7306/gq.v63i1.26135.g17940 https://gq.pgi.gov.pl/article/view/26135 doi:10.7306/gq.1453 Copyright (c) 2019 Geological Quarterly Geological Quarterly; Vol. 63 No. 1 (2019); 192–207, doi:10.7306/gq.1453 Geological Quarterly; Tom 63 Nr 1 (2019); 192–207, doi:10.7306/gq.1453 1641-7291 10.7306/gq.v63i1 southern Baltic deglaciation Late Glacial Słupsk Bank Phase OSL dating info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftjgq https://doi.org/10.7306/gq.145310.7306/gq.v63i1 2024-07-30T03:29:08Z The paper presents the results of the first OSL dating of glaciofluvial and ice-marginal lake sediments which occur between end moraines of the Słupsk Bank and the Polish coast. The sand and gravel of glaciofluvial deltas on the Słupsk Bank were deposited most likely during a period from 14.3 ±1.2 to 16.6 ±1.4 ka ago. The deposition of silty-sandy sediments of the ice-marginal lake is dated at 14.51 ±0.81 and 14.6 ±1.4 ka years. Likewise, dates ranging from 13.74 ±0.84 to 16.70 ±1.1 ka obtained from low sandy ridges, related to the southern range of the ice-marginal lake in the Gardno-Łeba Lowland, indicate the most likely timing of their deposition. It can be concluded that a short stop of the ice sheet on the Słupsk Bank took place approximately 15.2 ka ago, which could be correlated with the position of the ice sheet front in central SkŻne and in northern Lithuania at that time. Older and younger results were also obtained, except the dates mentioned above. The older ages show little sunlight exposure of sediments during their deposition. The younger dates indicate a marine origin of the sediments and show that some parts of glaciofluvial sediments were redeposited and exposed to sunlight at a later stage, most probably when dead-ice blocks were melting. Article in Journal/Newspaper Ice Sheet Geological Quarterly |
institution |
Open Polar |
collection |
Geological Quarterly |
op_collection_id |
ftjgq |
language |
English |
topic |
southern Baltic deglaciation Late Glacial Słupsk Bank Phase OSL dating |
spellingShingle |
southern Baltic deglaciation Late Glacial Słupsk Bank Phase OSL dating Uścinowicz, Szymon Chronology of the last ice sheet decay on the southern Baltic area based on dating of glaciofluvial and ice-dammed lake deposits |
topic_facet |
southern Baltic deglaciation Late Glacial Słupsk Bank Phase OSL dating |
description |
The paper presents the results of the first OSL dating of glaciofluvial and ice-marginal lake sediments which occur between end moraines of the Słupsk Bank and the Polish coast. The sand and gravel of glaciofluvial deltas on the Słupsk Bank were deposited most likely during a period from 14.3 ±1.2 to 16.6 ±1.4 ka ago. The deposition of silty-sandy sediments of the ice-marginal lake is dated at 14.51 ±0.81 and 14.6 ±1.4 ka years. Likewise, dates ranging from 13.74 ±0.84 to 16.70 ±1.1 ka obtained from low sandy ridges, related to the southern range of the ice-marginal lake in the Gardno-Łeba Lowland, indicate the most likely timing of their deposition. It can be concluded that a short stop of the ice sheet on the Słupsk Bank took place approximately 15.2 ka ago, which could be correlated with the position of the ice sheet front in central SkŻne and in northern Lithuania at that time. Older and younger results were also obtained, except the dates mentioned above. The older ages show little sunlight exposure of sediments during their deposition. The younger dates indicate a marine origin of the sediments and show that some parts of glaciofluvial sediments were redeposited and exposed to sunlight at a later stage, most probably when dead-ice blocks were melting. |
format |
Article in Journal/Newspaper |
author |
Uścinowicz, Szymon |
author_facet |
Uścinowicz, Szymon |
author_sort |
Uścinowicz, Szymon |
title |
Chronology of the last ice sheet decay on the southern Baltic area based on dating of glaciofluvial and ice-dammed lake deposits |
title_short |
Chronology of the last ice sheet decay on the southern Baltic area based on dating of glaciofluvial and ice-dammed lake deposits |
title_full |
Chronology of the last ice sheet decay on the southern Baltic area based on dating of glaciofluvial and ice-dammed lake deposits |
title_fullStr |
Chronology of the last ice sheet decay on the southern Baltic area based on dating of glaciofluvial and ice-dammed lake deposits |
title_full_unstemmed |
Chronology of the last ice sheet decay on the southern Baltic area based on dating of glaciofluvial and ice-dammed lake deposits |
title_sort |
chronology of the last ice sheet decay on the southern baltic area based on dating of glaciofluvial and ice-dammed lake deposits |
publisher |
Polish Geological Institute-National Research Institute |
publishDate |
2019 |
url |
https://gq.pgi.gov.pl/article/view/26135 https://doi.org/10.7306/gq.1453 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Geological Quarterly; Vol. 63 No. 1 (2019); 192–207, doi:10.7306/gq.1453 Geological Quarterly; Tom 63 Nr 1 (2019); 192–207, doi:10.7306/gq.1453 1641-7291 10.7306/gq.v63i1 |
op_relation |
https://gq.pgi.gov.pl/article/view/26135/pdf 10.7306/gq.v63i1.26135.g17940 https://gq.pgi.gov.pl/article/view/26135 doi:10.7306/gq.1453 |
op_rights |
Copyright (c) 2019 Geological Quarterly |
op_doi |
https://doi.org/10.7306/gq.145310.7306/gq.v63i1 |
_version_ |
1810449849814876160 |