Holocene shore displacement and deglaciation chronology in Norrbotten, Sweden
The coastal zone of Norrbotten, northern Sweden, was gradually inundated by the Ancylus Lake following the retreating ice margin and forming a highest coastline approximately 210 m above the present sea level. The succeeding shore displacement is reconstructed based on lithological investigations an...
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John Wiley & Sons Inc.
2006
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Online Access: | https://lup.lub.lu.se/record/419523 https://doi.org/10.1080/03009480500359160 |
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ftulundlup:oai:lup.lub.lu.se:59bf7de1-7c79-4c58-b1e3-f07fafde9822 2023-05-15T16:41:17+02:00 Holocene shore displacement and deglaciation chronology in Norrbotten, Sweden Lindén, Mattias Möller, Per Björck, Svante Sandgren, Per 2006 https://lup.lub.lu.se/record/419523 https://doi.org/10.1080/03009480500359160 eng eng John Wiley & Sons Inc. https://lup.lub.lu.se/record/419523 http://dx.doi.org/10.1080/03009480500359160 wos:000234922300001 scopus:32144450316 Boreas; 35(1), pp 1-22 (2006) ISSN: 1502-3885 Geology contributiontojournal/article info:eu-repo/semantics/article text 2006 ftulundlup https://doi.org/10.1080/03009480500359160 2023-02-01T23:33:01Z The coastal zone of Norrbotten, northern Sweden, was gradually inundated by the Ancylus Lake following the retreating ice margin and forming a highest coastline approximately 210 m above the present sea level. The succeeding shore displacement is reconstructed based on lithological investigations and radiocarbon datings of identified isolation sequences from 12 cored lake basins. The highest lake basins, along with two basins above the highest shoreline, suggest ice-free conditions already at 10 500 cal. yr BP. This is at least 500 years earlier than previously thought and implies rapid ice-sheet break-up in the Gulf of Bothnia. The shore displacement (RSL) curve represents a forced regression of successively decreasing rate through the Holocene, from 9 m/100 yr to 0.8 m/100 yr. During the first 1000-1200 years, the isostatic uplift is exponentially declining, followed by a constant uplift rate from c. 9500 cal. yr BP to 5500-5000 cal. yr BP. The last 5000 years seem to be characterized by a low but constant rebound rate. The development of the Ancylus Lake stage of the Baltic may also be discerned in the Norrbotten RSL curve, suggesting that the chronology of the Ancylus Lake stages may have to be revised. The Littorina transgression is also reflected by the RSL curve shape. In addition, a series of early to mid-Holocene beach terraces were OSL-dated to allow for comparison with the C-14-dated shore displacement curve. Interpretations of these ages and their relation to former sea levels were clearly more problematic than the dating of the lake basin isolations. Article in Journal/Newspaper Ice Sheet Northern Sweden Norrbotten Lund University Publications (LUP) Boreas 35 1 1 22 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology |
spellingShingle |
Geology Lindén, Mattias Möller, Per Björck, Svante Sandgren, Per Holocene shore displacement and deglaciation chronology in Norrbotten, Sweden |
topic_facet |
Geology |
description |
The coastal zone of Norrbotten, northern Sweden, was gradually inundated by the Ancylus Lake following the retreating ice margin and forming a highest coastline approximately 210 m above the present sea level. The succeeding shore displacement is reconstructed based on lithological investigations and radiocarbon datings of identified isolation sequences from 12 cored lake basins. The highest lake basins, along with two basins above the highest shoreline, suggest ice-free conditions already at 10 500 cal. yr BP. This is at least 500 years earlier than previously thought and implies rapid ice-sheet break-up in the Gulf of Bothnia. The shore displacement (RSL) curve represents a forced regression of successively decreasing rate through the Holocene, from 9 m/100 yr to 0.8 m/100 yr. During the first 1000-1200 years, the isostatic uplift is exponentially declining, followed by a constant uplift rate from c. 9500 cal. yr BP to 5500-5000 cal. yr BP. The last 5000 years seem to be characterized by a low but constant rebound rate. The development of the Ancylus Lake stage of the Baltic may also be discerned in the Norrbotten RSL curve, suggesting that the chronology of the Ancylus Lake stages may have to be revised. The Littorina transgression is also reflected by the RSL curve shape. In addition, a series of early to mid-Holocene beach terraces were OSL-dated to allow for comparison with the C-14-dated shore displacement curve. Interpretations of these ages and their relation to former sea levels were clearly more problematic than the dating of the lake basin isolations. |
format |
Article in Journal/Newspaper |
author |
Lindén, Mattias Möller, Per Björck, Svante Sandgren, Per |
author_facet |
Lindén, Mattias Möller, Per Björck, Svante Sandgren, Per |
author_sort |
Lindén, Mattias |
title |
Holocene shore displacement and deglaciation chronology in Norrbotten, Sweden |
title_short |
Holocene shore displacement and deglaciation chronology in Norrbotten, Sweden |
title_full |
Holocene shore displacement and deglaciation chronology in Norrbotten, Sweden |
title_fullStr |
Holocene shore displacement and deglaciation chronology in Norrbotten, Sweden |
title_full_unstemmed |
Holocene shore displacement and deglaciation chronology in Norrbotten, Sweden |
title_sort |
holocene shore displacement and deglaciation chronology in norrbotten, sweden |
publisher |
John Wiley & Sons Inc. |
publishDate |
2006 |
url |
https://lup.lub.lu.se/record/419523 https://doi.org/10.1080/03009480500359160 |
genre |
Ice Sheet Northern Sweden Norrbotten |
genre_facet |
Ice Sheet Northern Sweden Norrbotten |
op_source |
Boreas; 35(1), pp 1-22 (2006) ISSN: 1502-3885 |
op_relation |
https://lup.lub.lu.se/record/419523 http://dx.doi.org/10.1080/03009480500359160 wos:000234922300001 scopus:32144450316 |
op_doi |
https://doi.org/10.1080/03009480500359160 |
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Boreas |
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35 |
container_issue |
1 |
container_start_page |
1 |
op_container_end_page |
22 |
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1766031710728749056 |