气候变化领域集成服务门户(CCPortal): Moraine dam related to late Quaternary glaciation in the Yulong Mountains, southwest China, and impacts on the Jinsha River

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DOI	10.1016/j.quascirev.2009.08.005
	Moraine dam related to late Quaternary glaciation in the Yulong Mountains, southwest China, and impacts on the Jinsha River
	Kong, Ping; Na, Chunguang; Fink, David; Zhao, Xitao; Xiao, Wei
通讯作者	Kong, P (通讯作者)
发表日期	2009
ISSN	0277-3791
起始页码	3224
结束页码	3235
卷号	28 期号:27-28
英文摘要	The Yulong Mountain massif is tectonically active during Quaternary and contains the southernmost glacierized mountains in China, and all of Eurasia. Past glacial remnants remain preserved on the east and west sides of the Yulong Mountains. A ridge of moraine protruded into the Jinsha River at the Daju Basin, damming the river, and forming a lake at the head of the Jinsha River. Cosmogenic (10)Be and (26)Al provide exposure age dates for the moraine-based fluvial terraces left behind after the dam breached, and for moraine boulders on both the eastern and western sides of the Yulong Mountains. Our results yield exposure ages for the terraces that range from 29 ka to 8 ka, and a downcutting rate of 7.6 m/ka. The preservation of the remaining dam for over 10,000 years suggests stability of the moraine dam and gradual erosion of the dam during drainage of the dammed lake. From the relationship between exposure ages and elevations of the fluvial terraces located in different walls of the Daju fault, we obtain a late Quaternary dip-slip rate of about 5.6 m/ka for the Daju fault. The exposure ages of 10.2 ka and 47 ka for moraine boulders located in the east and west sides of the Yulong Mountains, respectively, coincide with warm periods in the late Quaternary. This implies that precipitation provides the major control for glaciations on the Yulong Mountains, a domain of the southwest Asian monsoon. (C) 2009 Elsevier Ltd. All rights reserved.
关键词	COSMOGENIC NUCLIDES PRODUCTION-RATES TIBETAN PLATEAU SCALING FACTORS YANGTZE-RIVER BE-10 PLEISTOCENE HIMALAYAS INCISION HOLOCENE
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000273195700014
来源期刊	QUATERNARY SCIENCE REVIEWS
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/257662
推荐引用方式 GB/T 7714	Kong, Ping,Na, Chunguang,Fink, David,et al. Moraine dam related to late Quaternary glaciation in the Yulong Mountains, southwest China, and impacts on the Jinsha River[J]. 中国科学院青藏高原研究所,2009,28(27-28).
APA	Kong, Ping,Na, Chunguang,Fink, David,Zhao, Xitao,&Xiao, Wei.(2009).Moraine dam related to late Quaternary glaciation in the Yulong Mountains, southwest China, and impacts on the Jinsha River.QUATERNARY SCIENCE REVIEWS,28(27-28).
MLA	Kong, Ping,et al."Moraine dam related to late Quaternary glaciation in the Yulong Mountains, southwest China, and impacts on the Jinsha River".QUATERNARY SCIENCE REVIEWS 28.27-28(2009).