A Pleistocene landslide-dammed lake, Jinsha River, Yunnan, China

doi:10.1016/j.quaint.2010.10.020

	A Pleistocene landslide-dammed lake, Jinsha River, Yunnan, China
	Zhang, Yongshuang 1; Zhao, Xitao 2; Lan, Hengxing 3; Xiong, Tanyu 1
刊名	QUATERNARY INTERNATIONAL
	2011-03-01
卷号	233 期号:1 页码:72-80
ISSN号	1040-6182
DOI	10.1016/j.quaint.2010.10.020
文献子类	Article
英文摘要	On both sides of the Jinsha River valley near Benzilan, Deqen, northwest of Yunnan, China, a series of varied lacustrine deposits have been discovered under the fourth terrace (Q(3)(2)). Landslide debris has been identified underlying the lacustrine deposits, indicating that the lacustrine deposits were caused by a landslide damming the Jinsha River. U-series dating shows that the age of the upper and middle portions of the lacustrine deposits on the right bank were 55.4 +/- 3.5 and 82.1 +/- 6.6 ka respectively. Lacustrine deposits on the left bank have been dated to 122.0 +/- 12.4 ka at the bottom, which indicates that the large-scale landslide was formed before 122.0 +/- 12.4 ka and the paleo-lake was developed within the early stage to the mid-stage of the Late Pleistocene. The characteristic of spore-pollen and high content of CaCO(3) in the lacustrine clays reveal that the paleoclimate was semi-arid with less heavy rainfall. Considering the regional neotectonic background, the authors prefer to interpret that the Benzilan ancient landslide-dammed lake was caused by an ancient earthquake. The discovery of the ancient landslide-dammed lake provides significance to the understanding of the formation and evolvement of calamitous geological hazards along large rivers. (C) 2010 Elsevier Ltd and INQUA. All rights reserved.
WOS关键词	2008 WENCHUAN EARTHQUAKE ; FAILURE ; HAZARDS ; AREA
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000288353500008
资助机构	National Science Foundation of China(41072269 ; National Science Foundation of China(41072269 ; China Geological Survey(1212010541404) ; China Geological Survey(1212010541404) ; 40672207) ; 40672207) ; National Science Foundation of China(41072269 ; National Science Foundation of China(41072269 ; China Geological Survey(1212010541404) ; China Geological Survey(1212010541404) ; 40672207) ; 40672207) ; National Science Foundation of China(41072269 ; National Science Foundation of China(41072269 ; China Geological Survey(1212010541404) ; China Geological Survey(1212010541404) ; 40672207) ; 40672207) ; National Science Foundation of China(41072269 ; National Science Foundation of China(41072269 ; China Geological Survey(1212010541404) ; China Geological Survey(1212010541404) ; 40672207) ; 40672207)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/74530]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang, Yongshuang
作者单位	1.Chinese Acad Geol Sci, Inst Geomech, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, LREIS, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yongshuang,Zhao, Xitao,Lan, Hengxing,et al. A Pleistocene landslide-dammed lake, Jinsha River, Yunnan, China[J]. QUATERNARY INTERNATIONAL,2011,233(1):72-80.
APA	Zhang, Yongshuang,Zhao, Xitao,Lan, Hengxing,&Xiong, Tanyu.(2011).A Pleistocene landslide-dammed lake, Jinsha River, Yunnan, China.QUATERNARY INTERNATIONAL,233(1),72-80.
MLA	Zhang, Yongshuang,et al."A Pleistocene landslide-dammed lake, Jinsha River, Yunnan, China".QUATERNARY INTERNATIONAL 233.1(2011):72-80.