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Absence of Large-Sc...
Absence of Large-Scale Ice Masses in Central Northeast Siberia During the Late Pleistocene
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Nørgaard, Jesper (författare)
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Margold, Martin (författare)
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Jansen, John D. (författare)
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Kurbanov, Redzhep (författare)
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Szuman, Izabela (författare)
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- Lund Andersen, Jane, 1986- (författare)
- Stockholms universitet,Institutionen för naturgeografi,Aarhus University, Denmark
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Olsen, Jesper (författare)
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Knudsen, Mads Faurschou (författare)
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 50:10
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Ongoing speculation regarding the existence of large Late Pleistocene ice masses in Northeast Eurasia reflects the dearth of age constraints on glaciations across this vast region. Here, we report the first dates from the central part of Northeast Siberia, consisting of 22 cosmogenic 10Be exposure ages from boulders deriving from a sequence of three moraines in the Chersky Range. The dated moraine sequence indicates progressive contraction of maximum glacier extent from Marine Isotope Stage 6 to the Last Glacial Maximum, while the remotely-sensed mapping indicates an older, more expansive glaciation in the region yet undated. Our results show that Late Pleistocene glaciations were limited to the highlands, and Northeast Siberia did not host a large, coalescent ice sheet during the Last Glacial Maximum or Marine Isotope Stage 6.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Naturgeografi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Physical Geography (hsv//eng)
Nyckelord
- mountain glaciers
- glacial moraines
- boulder erratics
- exposure dating
- cosmogenic nuclides
- ice sheet
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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