MIS 3 marine and lacustrine sediments at Kriegers Flak, southwestern Baltic Sea
Sediment cores from the Kriegers Flak area in the southwestern Baltic Sea show a distinct lithological succession, starting with a lower diamict that is overlain by a c. 10 m thick clay unit that contains peat, gyttja and other organic remains. On top follows an upper diamict that is inter-layered w...
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ftulundlup:oai:lup.lub.lu.se:e99e7ab2-2c13-4214-a2e8-a9c52222eaa3 2023-05-15T16:41:06+02:00 MIS 3 marine and lacustrine sediments at Kriegers Flak, southwestern Baltic Sea Anjar, Johanna Larsen, Nicolaj Krog Björck, Svante Adrielsson, Lena Filipsson, Helena 2010 https://lup.lub.lu.se/record/1568325 https://doi.org/10.1111/j.1502-3885.2010.00139.x eng eng John Wiley & Sons Inc. https://lup.lub.lu.se/record/1568325 http://dx.doi.org/10.1111/j.1502-3885.2010.00139.x wos:000274953600015 scopus:77953891231 Boreas; 39(2), pp 360-366 (2010) ISSN: 1502-3885 Geology contributiontojournal/article info:eu-repo/semantics/article text 2010 ftulundlup https://doi.org/10.1111/j.1502-3885.2010.00139.x 2023-02-01T23:29:31Z Sediment cores from the Kriegers Flak area in the southwestern Baltic Sea show a distinct lithological succession, starting with a lower diamict that is overlain by a c. 10 m thick clay unit that contains peat, gyttja and other organic remains. On top follows an upper diamict that is inter-layered with sorted sediments and overlain by an upward-coarsening sequence with molluscs. In this paper we focus on the clay unit, which has been subdivided into three subunits: (A) lower clay with benthic foraminifera and with diamict beds in the lower part; (B) thin beds of gyttja and peat, which have been radiocarbon-dated to 31-35 14C kyr BP (c. 36-41 cal. kyr BP); and (C) upper clay unit. Based on the preliminary results we suggest the following depositional model: fine-grained sediments interbedded with diamict in the lower part (subunit A) were deposited in a brackish basin during a retreat of the Scandinavian Ice Sheet, probably during the Middle Weichselian. Around 40 kyr BP the area turned into a wetland with small ponds (subunit B). A transgression, possibly caused by the damming of the Baltic Basin during the Kattegat advance at 29 kyr BP, led to the deposition of massive clay (subunit C). The data presented here provide new information about the paleoenvironmental changes occurring in the Baltic Basin following the Middle Weichselian glaciation. Article in Journal/Newspaper Ice Sheet Lund University Publications (LUP) Kattegat ENVELOPE(9.692,9.692,63.563,63.563) Boreas 39 2 360 366 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology |
spellingShingle |
Geology Anjar, Johanna Larsen, Nicolaj Krog Björck, Svante Adrielsson, Lena Filipsson, Helena MIS 3 marine and lacustrine sediments at Kriegers Flak, southwestern Baltic Sea |
topic_facet |
Geology |
description |
Sediment cores from the Kriegers Flak area in the southwestern Baltic Sea show a distinct lithological succession, starting with a lower diamict that is overlain by a c. 10 m thick clay unit that contains peat, gyttja and other organic remains. On top follows an upper diamict that is inter-layered with sorted sediments and overlain by an upward-coarsening sequence with molluscs. In this paper we focus on the clay unit, which has been subdivided into three subunits: (A) lower clay with benthic foraminifera and with diamict beds in the lower part; (B) thin beds of gyttja and peat, which have been radiocarbon-dated to 31-35 14C kyr BP (c. 36-41 cal. kyr BP); and (C) upper clay unit. Based on the preliminary results we suggest the following depositional model: fine-grained sediments interbedded with diamict in the lower part (subunit A) were deposited in a brackish basin during a retreat of the Scandinavian Ice Sheet, probably during the Middle Weichselian. Around 40 kyr BP the area turned into a wetland with small ponds (subunit B). A transgression, possibly caused by the damming of the Baltic Basin during the Kattegat advance at 29 kyr BP, led to the deposition of massive clay (subunit C). The data presented here provide new information about the paleoenvironmental changes occurring in the Baltic Basin following the Middle Weichselian glaciation. |
format |
Article in Journal/Newspaper |
author |
Anjar, Johanna Larsen, Nicolaj Krog Björck, Svante Adrielsson, Lena Filipsson, Helena |
author_facet |
Anjar, Johanna Larsen, Nicolaj Krog Björck, Svante Adrielsson, Lena Filipsson, Helena |
author_sort |
Anjar, Johanna |
title |
MIS 3 marine and lacustrine sediments at Kriegers Flak, southwestern Baltic Sea |
title_short |
MIS 3 marine and lacustrine sediments at Kriegers Flak, southwestern Baltic Sea |
title_full |
MIS 3 marine and lacustrine sediments at Kriegers Flak, southwestern Baltic Sea |
title_fullStr |
MIS 3 marine and lacustrine sediments at Kriegers Flak, southwestern Baltic Sea |
title_full_unstemmed |
MIS 3 marine and lacustrine sediments at Kriegers Flak, southwestern Baltic Sea |
title_sort |
mis 3 marine and lacustrine sediments at kriegers flak, southwestern baltic sea |
publisher |
John Wiley & Sons Inc. |
publishDate |
2010 |
url |
https://lup.lub.lu.se/record/1568325 https://doi.org/10.1111/j.1502-3885.2010.00139.x |
long_lat |
ENVELOPE(9.692,9.692,63.563,63.563) |
geographic |
Kattegat |
geographic_facet |
Kattegat |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Boreas; 39(2), pp 360-366 (2010) ISSN: 1502-3885 |
op_relation |
https://lup.lub.lu.se/record/1568325 http://dx.doi.org/10.1111/j.1502-3885.2010.00139.x wos:000274953600015 scopus:77953891231 |
op_doi |
https://doi.org/10.1111/j.1502-3885.2010.00139.x |
container_title |
Boreas |
container_volume |
39 |
container_issue |
2 |
container_start_page |
360 |
op_container_end_page |
366 |
_version_ |
1766031547318665216 |