Postglacial emergence and distribution of late Weichselian ice-sheet loads in the northern Barents and Kara seas, Russia

Reconstructions of late Weichselian glacier coverage on the continental shelves of the Russian Arctic range from a large ice sheet terminating in northern Siberia to isolated ice caps restricted to Arctic archipelagos. This disparity in glacier reconstructions reflects the lack of chronological cont...

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Bibliographic Details
Published in:Geology (Boulder) 1995-02, Vol.23 (2), p.113-116
Main Authors: Forman, Steven L, Lubinski, David, Miller, Gifford H, Snyder, Jeffrey, Matishov, Gennady, Korsun, Sergey, Myslivets, Vladimir
Format: Article
Language:English
Subjects:
absolute age
Arctic Ocean
Arkhangelsk Russian Federation
Barents Sea
C-14
carbon
Cenozoic
Commonwealth of Independent States
continental shelf
dates
deglaciation
Europe
Franz Josef Land
Geology
glacial environment
glacial geology
glaciation
Glaciers
glaciomarine environment
ice sheets
isotopes
Kara Sea
Marine
marine environment
marine sediments
Novaya Zemlya
Oceanography
organic compounds
organic materials
Pleistocene
postglacial environment
Quaternary
Quaternary geology
radioactive isotopes
raised beaches
Russian Federation
Russian Platform
sea-level changes
sediments
shells
shore features
upper Pleistocene
upper Weichselian
Urals
Weichselian
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Summary:Reconstructions of late Weichselian glacier coverage on the continental shelves of the Russian Arctic range from a large ice sheet terminating in northern Siberia to isolated ice caps restricted to Arctic archipelagos. This disparity in glacier reconstructions reflects the lack of chronological control on glacial and deglacial landforms. We present new Holocene relative sea-level data from Franz Josef Land and northern Novaya Zemlya, Russia, that place the thickest glacier loads in the northern Barents Sea and not over Novaya Zemlya. Radiocarbon ages from shelf and terrestrial areas at the former ice-sheet margin support deglaciation of the northern Barents Sea between 13.0 and 10.3 ka, considerably later than inferred from isotopic records for the Arctic Ocean. This analysis indicates that the Barents Sea ice sheet was a dominant sea-level reservoir in northern Eurasia, and that glacier loading of Novaya Zemlya was comparatively limited during the last glaciation.
ISSN:0091-7613
1943-2682
DOI:10.1130/0091-7613(1995)023<0113:PEADOL>2.3.CO;2