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DOI	10.1016/j.epsl.2008.12.003
	Cosmogenic nuclide burial ages and provenance of the Xigeda paleo-lake: Implications for evolution of the Middle Yangtze River
	Kong, Ping; Granger, Darryl E.; Wu, Fu-Yuan; Caffee, Marc W.; Wang, Ya-Jun; Zhao, Xi-Tao; Zheng, Yong
通讯作者	Kong, P (通讯作者)
发表日期	2009
ISSN	0012-821X
起始页码	131
结束页码	141
卷号	278 期号:1-2
英文摘要	Hundred-meter-thick lacustrine sediments are widespread along the Middle Yangtze River. The distribution of these sediments suggests that an event blocked the river, forming a lake stretching 160 km from east to west and 110 km north to south, with a depth of 2 500 m. Using the cosmogenic nuclides (10)Be and (26)Al we have dated the time of burial of the lacustrine sediments and fluvial gravels beneath the sediments. Our results indicate a deposition age for these sediments between 1.34 and 1.58 Ma. Studies of zircon U-Pb age distributions within lacustrine sediments and fluvial sands related to the paleo-lake formation show diverse provenances from the upper Yangtze River and Yalong River, a major tributary of the Yangtze River. These deposits contain geologic fingerprints that allow identification of the source region of the lacustrine deposits and fluvial sands. Our results support the reversal of the Middle Yangtze River before the paleo-lake formation. We hypothesize that the geologic event that dammed the originally southward flow was the lateral movement of Chenghai fault in the Dali fault system initiated in early Quaternary. Water eventually cut through the spillway and flowed to the east. (c) 2008 Elsevier B.V. All rights reserved.
关键词	TIBETAN-PLATEAU U-PB CENTRAL CHINA SOUTH CHINA MARGIN BE-10 DEFORMATION COLLISION STANDARDS SEDIMENTS
英文关键词	Burial age; cosmogenic nuclide; zircon U-Pb age; Yangtze River; Dali system; Xigeda
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000263708400013
来源期刊	EARTH AND PLANETARY SCIENCE LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257707
推荐引用方式 GB/T 7714	Kong, Ping,Granger, Darryl E.,Wu, Fu-Yuan,et al. Cosmogenic nuclide burial ages and provenance of the Xigeda paleo-lake: Implications for evolution of the Middle Yangtze River[J]. 中国科学院青藏高原研究所,2009,278(1-2).
APA	Kong, Ping.,Granger, Darryl E..,Wu, Fu-Yuan.,Caffee, Marc W..,Wang, Ya-Jun.,...&Zheng, Yong.(2009).Cosmogenic nuclide burial ages and provenance of the Xigeda paleo-lake: Implications for evolution of the Middle Yangtze River.EARTH AND PLANETARY SCIENCE LETTERS,278(1-2).
MLA	Kong, Ping,et al."Cosmogenic nuclide burial ages and provenance of the Xigeda paleo-lake: Implications for evolution of the Middle Yangtze River".EARTH AND PLANETARY SCIENCE LETTERS 278.1-2(2009).