The Last Deglaciation of the Southeastern Sector of the Scandinavian Ice Sheet

The Scandinavian Ice Sheet (SIS) was an important component of the global ice sheet system during the last glaciation, but the timing of its growth to or retreat from its maximum extent remains poorly known. We used 115 cosmogenic beryllium-10 ages and 70 radiocarbon ages to constrain the timing of...

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Bibliographic Details
Published in:Science
Main Authors: Rinterknecht, Vincent, Clark, P U, Raisbeck, G M, Yiou, F, Bitinas, A, Brook, E J, Marks, L, Zelcs, V, Lunkka, J P, Pavlovskaya, I E, Piotrowski, J A, Raukas, A
Format: Article in Journal/Newspaper
Language:English
Published: 2006
Subjects:
SEA-LEVEL
GLACIAL MAXIMUM
HEINRICH EVENTS
NORTH-ATLANTIC
CALIBRATION
FINLAND
EXTENT
GISP2
AGE
Ice Sheet
North Atlantic
Online Access:https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-last-deglaciation-of-the-southeastern-sector-of-the-scandinavian-ice-sheet(d0fdcc9f-6d65-4884-8f42-a8e22bbfa719).html
https://doi.org/10.1126/science.1120702
http://www.scopus.com/inward/record.url?scp=33644864724&partnerID=8YFLogxK
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Summary:The Scandinavian Ice Sheet (SIS) was an important component of the global ice sheet system during the last glaciation, but the timing of its growth to or retreat from its maximum extent remains poorly known. We used 115 cosmogenic beryllium-10 ages and 70 radiocarbon ages to constrain the timing of three substantial ice-margin fluctuations of the SIS between 25,000 and 12,000 years before the present. The age of initial deglaciation indicates that the SIS may have contributed to an abrupt rise in global sea level. Subsequent ice-margin fluctuations identify opposite mass-balance responses to North Atlantic climate change, indicating differing ice-sheet sensitivities to mean climate state.

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