Paleoglaciation of Shaluli Shan, southeastern Tibetan Plateau

Reconstructing the paleoglaciation of the Tibetan Plateau is critical to understanding linkages between regional climate changes and global climate changes, and here we focus on the glacial history of the Shaluli Shan, an area of the southeastern Tibetan Plateau that receives much of its precipitati...

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Bibliographic Details
Published in:Quaternary Science Reviews
Main Authors: Fu, Ping, Stroeven, Arjen P., Harbor, Jonathan M., Hattestrand, Clas, Heyman, Jakob, Caffee, Marc W., Zhou, Liping
Other Authors: Fu, P (reprint author), Stockholm Univ, Dept Phys Geog & Quaternary Geol, SE-10691 Stockholm, Sweden., Stockholm Univ, Dept Phys Geog & Quaternary Geol, SE-10691 Stockholm, Sweden., Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA., Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA., Peking Univ, Coll Urban & Environm Sci, Beijing 102413, Peoples R China.
Format: Journal/Newspaper
Language:English
Published: quaternary science reviews 2013
Subjects:
Tibetan Plateau
Glaciation
Cosmogenic exposure dating
Last Glacial Maximum
Monsoon
LATE QUATERNARY GLACIATION
SITU COSMOGENIC NUCLIDES
SURFACE EXPOSURE AGES
LATE CENOZOIC UPLIFT
PRODUCTION-RATES
NORTHERN PAKISTAN
GLACIER RESPONSE
HIMALAYAN OROGEN
SOUTHERN TIBET
GLOBAL CLIMATE
Ice cap
Online Access:https://hdl.handle.net/20.500.11897/225690
https://doi.org/10.1016/j.quascirev.2012.12.009
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Summary:Reconstructing the paleoglaciation of the Tibetan Plateau is critical to understanding linkages between regional climate changes and global climate changes, and here we focus on the glacial history of the Shaluli Shan, an area of the southeastern Tibetan Plateau that receives much of its precipitation from monsoon flow. Based on field investigation, geomorphological mapping, and Be-10 exposure dating of moraines, we identify glacial deposits from the Late Glacial, with minimum ages at 13.0 +/- 1.2 -17.1 +/- 1.6 ka, global Last Glacial Maximum (gLGM) at 21.6 +/- 2.0 ka, and pre-gLGM at 102.3 +/- 10.0-183.6 +/- 17.0 ka. These ages are consistent with and significantly extend the known range from most prior chronological work using terrestrial cosmogenic nuclides in this area, and include a set of dates for the Kuzhaori moraine that raise questions about prior chronologies based on the electron spin resonance technique. Ice caps about 4000 km(2) in size covered the Haizishan Plateau and the Xinlong Plateau during the global LGM, with large glaciers extending far down outlet valleys. The presence of ice cap glaciation, here, contrasts strongly to glaciation elsewhere in the Shaluli Shan and more central regions of the Tibetan Plateau where ice expansion remained constricted to valleys. This work provides important insights into the paleoclimate pattern and monsoon evolution of the Tibetan Plateau over past glacial cycles and indicates that the Shaluli Shan has a glacial chronology more consistent with the Northern Hemisphere paleo-ice sheets than other areas of the Tibetan Plateau. (C) 2013 Elsevier Ltd. All rights reserved. Geography, Physical Geosciences, Multidisciplinary SCI(E) EI 10 ARTICLE 121-135 64

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