Late Quaternary glacial and climate history of the Pamir Mountains derived from cosmogenic 10Be exposure ages
Authors:
- Pjotr SosinPSPjotr Sosin
- 1 September 2005
- journal article
- Published by Cambridge University Press (CUP) in Quaternary Research
- Vol. 64 (2) , 212-220
Abstract
Moraines southwest of Lake Yashilkul, Pamir, Tajikistan, were dated using 10Be exposure ages of boulder surfaces. We found evidence for (1) an extensive glaciation ∼60,000 yr ago; (2) a less extensive glacial advance, which deposited a characteristic hummocky moraine lobe with exposure ages ranging from ∼11,000 to 47,000 yr, probably deposited at or before 47,000 yr ago; and (3) lateral moraines with exposure ages of ∼40,000 yr, 27,000 yr and 19,000 yr, respectively. Increasing aridity in the Pamir is most likely responsible for the progressively limited extent of the glaciers during the Late Pleistocene.Keywords
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