DOI: 10.1016/j.quascirev.2012.12.009
Scopus记录号: 2-s2.0-84873287405
论文题名: Paleoglaciation of Shaluli Shan, southeastern Tibetan Plateau
作者: Fu P. ; Stroeven A.P. ; Harbor J.M. ; Hättestrand C. ; Heyman J. ; Caffee M.W. ; Zhou L.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 64 起始页码: 121
结束页码: 135
语种: 英语
英文关键词: Cosmogenic exposure dating
; Glaciation
; Last Glacial Maximum
; Monsoon
; Tibetan Plateau
Scopus关键词: Cosmogenic exposure
; Glaciation
; Last Glacial Maximum
; Monsoon
; Tibetan Plateau
; Atmospheric thermodynamics
; Climate change
; Snow
; Glacial geology
; cosmogenic radionuclide
; electron spin resonance
; geomorphological mapping
; glaciation
; global climate
; ice cap
; Last Glacial
; Last Glacial Maximum
; monsoon
; regional climate
; China
; Qinghai-Xizang Plateau
; Shaluli Mountains
; Sichuan
英文摘要: 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 10Be 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 km2 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. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60694
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Physical Geography and Quaternary Geology, Stockholm University, Stockholm, SE 10691, Sweden; Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN 47907, United States; Department of Physics, Purdue University, West Lafayette, IN 47907, United States; College of Urban and Environmental Science, Peking University, Beijing 102413, China
Recommended Citation:
Fu P.,Stroeven A.P.,Harbor J.M.,et al. Paleoglaciation of Shaluli Shan, southeastern Tibetan Plateau[J]. Quaternary Science Reviews,2013-01-01,64