Chronology of relict lake deposits around the Suwalong paleolandslide in the upper Jinsha River, SE Tibetan Plateau: Implications to Holocene tectonic perturbations

doi:10.1016/j.geomorph.2014.04.027

	Chronology of relict lake deposits around the Suwalong paleolandslide in the upper Jinsha River, SE Tibetan Plateau: Implications to Holocene tectonic perturbations
	Wang, Pengfei 1; Chen, Jian 1; Dai, Fuchu 2; Long, Wei 1; Xu, Chong 3; Sun, Jimin 2; Cui, Zhijiu 4
刊名	GEOMORPHOLOGY
	2014-07-15
卷号	217 页码:193-203
关键词	Landslide dam Paleo-dammed lakes Radiocarbon dating Luminescence dating Jinsha River
ISSN号	0169-555X
DOI	10.1016/j.geomorph.2014.04.027
文献子类	Article
英文摘要	The Suwalong paleolandslide is located in the Batang-Zhongza reach of the upper Jinsha River, at the southeast margin of the Tibetan Plateau where tectonic activity is very strong, and has formed a great deal of large paleolandslides or their relicts. The relict deposits that have been exposed around the Suwalong paleolandslide provide an opportunity to understand the formation process and potential origin of a former landslide-dammed lake in the active belt region. Two-level platforms of ancient dammed lake deposits were found on both the upstream and downstream sides of the relict landslide dam. The chronology of the landslide and its surrounding relict lake deposits were studied by using C-14 dating and OSL dating. The minimum age of the Suwalong landslide blocking the Jinsha River was shown to be about 1355 yr BP, and those of its surrounding two platforms of lacustrine sediments were shown as 1.8 and 1.3 ka BP. The recordings of the soft-sediment deformations induced by seismic liquefaction were found in the dammed lake sediments, thus providing substantial evidence for the existence of the paleoseismic events. We can infer that the Suwalong landslide may have been triggered by a paleoearthquake or combination of paleoearthquake and rainfall events. The chronology of the landslide-dammed lake deposits around the relict Suwalong landslide dam reveals that the large-scale landslides in the Batang-Zhongza reach of the upper Jinsha River were formed during numerous periods, namely the large-scale landslides may have been triggered by several paleoearthquake events (occurring at around 1900, 1355, and 1115 yr BP), indicating that the Jinsha River faults in the area may have been quite active since the late Holocene. (C) 2014 Elsevier B.V. All rights reserved.
WOS关键词	LANDSLIDE-DAMMED LAKES ; CLIMATE ; RECORD ; CHINA ; BASIN ; DAMS
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000338818700016
资助机构	National Natural Science Foundation of China(40901005) ; National Natural Science Foundation of China(40901005) ; Fundamental Research Funds for the Central Universities(2011YXL054) ; Fundamental Research Funds for the Central Universities(2011YXL054) ; National Natural Science Foundation of China(40901005) ; National Natural Science Foundation of China(40901005) ; Fundamental Research Funds for the Central Universities(2011YXL054) ; Fundamental Research Funds for the Central Universities(2011YXL054) ; National Natural Science Foundation of China(40901005) ; National Natural Science Foundation of China(40901005) ; Fundamental Research Funds for the Central Universities(2011YXL054) ; Fundamental Research Funds for the Central Universities(2011YXL054) ; National Natural Science Foundation of China(40901005) ; National Natural Science Foundation of China(40901005) ; Fundamental Research Funds for the Central Universities(2011YXL054) ; Fundamental Research Funds for the Central Universities(2011YXL054)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85668]
专题	中国科学院地质与地球物理研究所
通讯作者	Chen, Jian
作者单位	1.China Univ Geosci, Sch Engn & Technol, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.China Earthquake Adm, Inst Geol, Beijing 100029, Peoples R China 4.Beijing Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Wang, Pengfei,Chen, Jian,Dai, Fuchu,et al. Chronology of relict lake deposits around the Suwalong paleolandslide in the upper Jinsha River, SE Tibetan Plateau: Implications to Holocene tectonic perturbations[J]. GEOMORPHOLOGY,2014,217:193-203.
APA	Wang, Pengfei.,Chen, Jian.,Dai, Fuchu.,Long, Wei.,Xu, Chong.,...&Cui, Zhijiu.(2014).Chronology of relict lake deposits around the Suwalong paleolandslide in the upper Jinsha River, SE Tibetan Plateau: Implications to Holocene tectonic perturbations.GEOMORPHOLOGY,217,193-203.
MLA	Wang, Pengfei,et al."Chronology of relict lake deposits around the Suwalong paleolandslide in the upper Jinsha River, SE Tibetan Plateau: Implications to Holocene tectonic perturbations".GEOMORPHOLOGY 217(2014):193-203.