Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area – implications for ice sheet dynamics
Previous assumptions of continuous ice cover of the core area of the Fennoscandian Ice Sheet, from Marine Isotope Stage 4 (ca. 70 ka) to the end of MIS 2 (ca. 12 ka), have been challenged by the discovery of several sites in central and northern Scandinavia with interstadial sediments of assumed MIS...
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ftuglasgow:oai:eprints.gla.ac.uk:244278 2023-05-15T16:12:55+02:00 Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area – implications for ice sheet dynamics Kleman, Johan Hättestrand, Martina Borgström, Ingmar Fabel, Derek Preusser, Frank 2021-07-15 text http://eprints.gla.ac.uk/244278/ http://eprints.gla.ac.uk/244278/1/244278.pdf en eng Elsevier http://eprints.gla.ac.uk/244278/1/244278.pdf Kleman, J., Hättestrand, M., Borgström, I., Fabel, D. <http://eprints.gla.ac.uk/view/author/5585.html> and Preusser, F. (2021) Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area – implications for ice sheet dynamics. Quaternary Science Reviews <http://eprints.gla.ac.uk/view/journal_volume/Quaternary_Science_Reviews.html>, 264, 107011. (doi:10.1016/j.quascirev.2021.107011 <http://dx.doi.org/10.1016/j.quascirev.2021.107011>) cc_by_nc_nd_4 CC-BY-NC-ND Articles PeerReviewed 2021 ftuglasgow https://doi.org/10.1016/j.quascirev.2021.107011 2022-06-23T22:09:46Z Previous assumptions of continuous ice cover of the core area of the Fennoscandian Ice Sheet, from Marine Isotope Stage 4 (ca. 70 ka) to the end of MIS 2 (ca. 12 ka), have been challenged by the discovery of several sites in central and northern Scandinavia with interstadial sediments of assumed MIS 3 age. The sequences have often been dated by Optically Stimulated Luminescence (OSL) and dates of around 55 ka are present at most sites, indicating ice-free conditions at this time. There is less consensus about the timing of the build-up and advance of the last (Late Weichselian) ice sheet after this ice-free stage. To address the duration of MIS 3 ice-free conditions in central Scandinavia, we reviewed available dating evidence. At the few sites where multiple OSL dates are available, ages indicate around 15 ka of ice-free conditions. Two studies employing cosmogenic nuclide dating of preserved interstadial ground surfaces both indicate a 20 ka long period of ice-free conditions during the last ice-free period before the Holocene. Our interpretation is that central Scandinavia became ice-free around 55 ka and remained so until c. 35 ka, when the Scandinavian Ice Sheet started to expand once again. Expansion started from a small-sized remnant ice sheet, or from separate remnant ice caps in Norway. Available data limits the size of any Scandinavian ice sheet remnant surviving the MIS 3 interstadial to less than 1 m of global sea-level equivalent. Article in Journal/Newspaper Fennoscandian Ice Sheet University of Glasgow: Enlighten - Publications Norway Quaternary Science Reviews 264 107011 |
institution |
Open Polar |
collection |
University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
English |
description |
Previous assumptions of continuous ice cover of the core area of the Fennoscandian Ice Sheet, from Marine Isotope Stage 4 (ca. 70 ka) to the end of MIS 2 (ca. 12 ka), have been challenged by the discovery of several sites in central and northern Scandinavia with interstadial sediments of assumed MIS 3 age. The sequences have often been dated by Optically Stimulated Luminescence (OSL) and dates of around 55 ka are present at most sites, indicating ice-free conditions at this time. There is less consensus about the timing of the build-up and advance of the last (Late Weichselian) ice sheet after this ice-free stage. To address the duration of MIS 3 ice-free conditions in central Scandinavia, we reviewed available dating evidence. At the few sites where multiple OSL dates are available, ages indicate around 15 ka of ice-free conditions. Two studies employing cosmogenic nuclide dating of preserved interstadial ground surfaces both indicate a 20 ka long period of ice-free conditions during the last ice-free period before the Holocene. Our interpretation is that central Scandinavia became ice-free around 55 ka and remained so until c. 35 ka, when the Scandinavian Ice Sheet started to expand once again. Expansion started from a small-sized remnant ice sheet, or from separate remnant ice caps in Norway. Available data limits the size of any Scandinavian ice sheet remnant surviving the MIS 3 interstadial to less than 1 m of global sea-level equivalent. |
format |
Article in Journal/Newspaper |
author |
Kleman, Johan Hättestrand, Martina Borgström, Ingmar Fabel, Derek Preusser, Frank |
spellingShingle |
Kleman, Johan Hättestrand, Martina Borgström, Ingmar Fabel, Derek Preusser, Frank Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area – implications for ice sheet dynamics |
author_facet |
Kleman, Johan Hättestrand, Martina Borgström, Ingmar Fabel, Derek Preusser, Frank |
author_sort |
Kleman, Johan |
title |
Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area – implications for ice sheet dynamics |
title_short |
Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area – implications for ice sheet dynamics |
title_full |
Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area – implications for ice sheet dynamics |
title_fullStr |
Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area – implications for ice sheet dynamics |
title_full_unstemmed |
Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area – implications for ice sheet dynamics |
title_sort |
age and duration of a mis 3 interstadial in the fennoscandian ice sheet core area – implications for ice sheet dynamics |
publisher |
Elsevier |
publishDate |
2021 |
url |
http://eprints.gla.ac.uk/244278/ http://eprints.gla.ac.uk/244278/1/244278.pdf |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Fennoscandian Ice Sheet |
genre_facet |
Fennoscandian Ice Sheet |
op_relation |
http://eprints.gla.ac.uk/244278/1/244278.pdf Kleman, J., Hättestrand, M., Borgström, I., Fabel, D. <http://eprints.gla.ac.uk/view/author/5585.html> and Preusser, F. (2021) Age and duration of a MIS 3 interstadial in the Fennoscandian Ice Sheet core area – implications for ice sheet dynamics. Quaternary Science Reviews <http://eprints.gla.ac.uk/view/journal_volume/Quaternary_Science_Reviews.html>, 264, 107011. (doi:10.1016/j.quascirev.2021.107011 <http://dx.doi.org/10.1016/j.quascirev.2021.107011>) |
op_rights |
cc_by_nc_nd_4 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.quascirev.2021.107011 |
container_title |
Quaternary Science Reviews |
container_volume |
264 |
container_start_page |
107011 |
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1765998519763599360 |