Pilgrimstad revisited – a multi-proxy reconstruction of Early/Middle Weichselian climate and environment at a key site in central Sweden
The site Pilgrimstad in central Sweden has often been cited as a key locality for discussions of ice-free/ice-covered intervals during the Early and Middle Weichselian. Multi-proxy investigations of a recently excavated section at Pilgrimstad now provide a revised picture of the climatic and environ...
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ftbirkbeckcoll:oai:eprints.bbk.ac.uk.oai2:41755 2023-05-15T14:56:05+02:00 Pilgrimstad revisited – a multi-proxy reconstruction of Early/Middle Weichselian climate and environment at a key site in central Sweden Wohlfarth, H. Alexanderson, H. Ampel, L. Bennike, O. Engels, Stefan Johnsen, T. Lundqvist, J. Reimer, P. 2011-04 https://eprints.bbk.ac.uk/id/eprint/41755/ https://doi.org/10.1111/j.1502-3885.2010.00192.x unknown Wiley Wohlfarth, H. and Alexanderson, H. and Ampel, L. and Bennike, O. and Engels, Stefan and Johnsen, T. and Lundqvist, J. and Reimer, P. (2011) Pilgrimstad revisited – a multi-proxy reconstruction of Early/Middle Weichselian climate and environment at a key site in central Sweden. Boreas 40 (2), pp. 211-230. ISSN 0300-9483. Department of Geography Article PeerReviewed 2011 ftbirkbeckcoll https://doi.org/10.1111/j.1502-3885.2010.00192.x 2022-01-09T09:08:25Z The site Pilgrimstad in central Sweden has often been cited as a key locality for discussions of ice-free/ice-covered intervals during the Early and Middle Weichselian. Multi-proxy investigations of a recently excavated section at Pilgrimstad now provide a revised picture of the climatic and environmental development between 80 and 36 ka ago. The combination of sedimentology, geochemistry, OSL and 14C dating, and macrofossil, siliceous microfossil and chironomid analyses shows: (i) a lower succession of glaciofluvial/fluvial, lacustrine and glaciolacustrine sediments; (ii) an upper lacustrine sediment sequence; and (iii) Last Glacial Maximum till cover. Microfossils in the upper lacustrine sediments are initially characteristic for oligo- to mesotrophic lakes, and macrofossils indicate arctic/sub-arctic environments and mean July temperatures481C. These conditions were, however, followed by a return to a low-nutrient lake and a cold and dry climate. The sequence contains several hiatuses, as shown by the often sharp contacts between individual units, which suggests that ice-free intervals alternated with possible ice advances during certain parts of the Early and Middle Weichselian. Article in Journal/Newspaper Arctic BIROn - Birkbeck Institutional Research Online (Birkbeck University of London) Arctic Boreas 40 2 211 230 |
institution |
Open Polar |
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BIROn - Birkbeck Institutional Research Online (Birkbeck University of London) |
op_collection_id |
ftbirkbeckcoll |
language |
unknown |
topic |
Department of Geography |
spellingShingle |
Department of Geography Wohlfarth, H. Alexanderson, H. Ampel, L. Bennike, O. Engels, Stefan Johnsen, T. Lundqvist, J. Reimer, P. Pilgrimstad revisited – a multi-proxy reconstruction of Early/Middle Weichselian climate and environment at a key site in central Sweden |
topic_facet |
Department of Geography |
description |
The site Pilgrimstad in central Sweden has often been cited as a key locality for discussions of ice-free/ice-covered intervals during the Early and Middle Weichselian. Multi-proxy investigations of a recently excavated section at Pilgrimstad now provide a revised picture of the climatic and environmental development between 80 and 36 ka ago. The combination of sedimentology, geochemistry, OSL and 14C dating, and macrofossil, siliceous microfossil and chironomid analyses shows: (i) a lower succession of glaciofluvial/fluvial, lacustrine and glaciolacustrine sediments; (ii) an upper lacustrine sediment sequence; and (iii) Last Glacial Maximum till cover. Microfossils in the upper lacustrine sediments are initially characteristic for oligo- to mesotrophic lakes, and macrofossils indicate arctic/sub-arctic environments and mean July temperatures481C. These conditions were, however, followed by a return to a low-nutrient lake and a cold and dry climate. The sequence contains several hiatuses, as shown by the often sharp contacts between individual units, which suggests that ice-free intervals alternated with possible ice advances during certain parts of the Early and Middle Weichselian. |
format |
Article in Journal/Newspaper |
author |
Wohlfarth, H. Alexanderson, H. Ampel, L. Bennike, O. Engels, Stefan Johnsen, T. Lundqvist, J. Reimer, P. |
author_facet |
Wohlfarth, H. Alexanderson, H. Ampel, L. Bennike, O. Engels, Stefan Johnsen, T. Lundqvist, J. Reimer, P. |
author_sort |
Wohlfarth, H. |
title |
Pilgrimstad revisited – a multi-proxy reconstruction of Early/Middle Weichselian climate and environment at a key site in central Sweden |
title_short |
Pilgrimstad revisited – a multi-proxy reconstruction of Early/Middle Weichselian climate and environment at a key site in central Sweden |
title_full |
Pilgrimstad revisited – a multi-proxy reconstruction of Early/Middle Weichselian climate and environment at a key site in central Sweden |
title_fullStr |
Pilgrimstad revisited – a multi-proxy reconstruction of Early/Middle Weichselian climate and environment at a key site in central Sweden |
title_full_unstemmed |
Pilgrimstad revisited – a multi-proxy reconstruction of Early/Middle Weichselian climate and environment at a key site in central Sweden |
title_sort |
pilgrimstad revisited – a multi-proxy reconstruction of early/middle weichselian climate and environment at a key site in central sweden |
publisher |
Wiley |
publishDate |
2011 |
url |
https://eprints.bbk.ac.uk/id/eprint/41755/ https://doi.org/10.1111/j.1502-3885.2010.00192.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Wohlfarth, H. and Alexanderson, H. and Ampel, L. and Bennike, O. and Engels, Stefan and Johnsen, T. and Lundqvist, J. and Reimer, P. (2011) Pilgrimstad revisited – a multi-proxy reconstruction of Early/Middle Weichselian climate and environment at a key site in central Sweden. Boreas 40 (2), pp. 211-230. ISSN 0300-9483. |
op_doi |
https://doi.org/10.1111/j.1502-3885.2010.00192.x |
container_title |
Boreas |
container_volume |
40 |
container_issue |
2 |
container_start_page |
211 |
op_container_end_page |
230 |
_version_ |
1766328120982372352 |