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Rapid Last Glacial Maximum deglaciation in the Indian Himalaya coeval with midlatitude glaciers: New insights from Be-10-dating of ice-polished bedrock surfaces in the Chandra Valley, NW Himalaya
- Despite a large number of dated glacial landforms in the Himalaya, the ice extent during the global Last Glacial Maximum (LGM) from 19 to 23 ka is only known to first order. New cosmogenic Be-10 exposure ages from well-preserved glacially polished surfaces, combined with published data, and an improved production rate scaling model allow reconstruction of the LGM ice extent and subsequent deglaciation in the Chandra Valley of NW India. We show that a >1000 m thick valley glacier retreated >150 km within a few thousand years after the onset of LGM deglaciation. By comparing the recession of the Chandra Valley Glacier and other Himalayan glaciers with those of Northern and Southern Hemisphere glaciers, we demonstrate that post-LGM deglaciation was similar and nearly finished prior to the Bolling/Allerod interstadial. Our study supports the view that many Himalayan glaciers advanced during the LGM, likely in response to global variations in temperature.
Verfasserangaben: | Patricia EugsterORCiD, Dirk Scherler, Rasmus Christoph ThiedeORCiDGND, Alexandru T. Codilean, Manfred StreckerORCiDGND |
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DOI: | https://doi.org/10.1002/2015GL066077 |
ISSN: | 0094-8276 |
ISSN: | 1944-8007 |
Titel des übergeordneten Werks (Englisch): | Geophysical research letters |
Verlag: | American Geophysical Union |
Verlagsort: | Washington |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2016 |
Erscheinungsjahr: | 2016 |
Datum der Freischaltung: | 22.03.2020 |
Band: | 43 |
Seitenanzahl: | 9 |
Erste Seite: | 1589 |
Letzte Seite: | 1597 |
Fördernde Institution: | Environment) of the German Science Foundation; DFG, Deutsche Forschungsgemeinschaft [STR 373/19-2]; DFG [TH 1371/5-1] |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften |
Peer Review: | Referiert |
Name der Einrichtung zum Zeitpunkt der Publikation: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften |