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DOI	10.1016/j.quaint.2004.01.026
	AMS radiocarbon dating of late Quaternary glacial landforms, source of the Urumqi River, Tien Shan - a pilot study of C-14 dating on inorganic carbon
	Yi, CL; Liu, KX; Cui, ZJ; Jiao, KQ; Yao, TD; He, YQ
发表日期	2004
ISSN	1040-6182
EISSN	1873-4553
起始页码	99
结束页码	107
卷号	121 页码:99-107
英文摘要	Carbonate coatings on roche moutonnees and till clasts and calcite in the fine matrix of late Quaternary glacial landforms were dated by using accelerating mass spectrometry (AMS) radiocarbon dating, at the source area of the Urumqi River, Tien Shan. The values of C-13 and the sedimentary properties of tills and coatings show that the precipitation of inorganic carbon in calcite in the till matrix is synchronous with till formation. The carbon dating of the fine matrix of till and the coatings on till clasts can be used to determine or estimate the ages of glacial moraines, as the inorganic carbon in fine matrix and coatings may preserve well with no or little fractionation. The largest-scaled moraine near Wangfeng road maintenance station was dated to be 19-23 ka. The age of the local Last Glaciation Maximum was, therefore, coincident with the global Last Glaciation Maximum. The moraine at Glacier Observatory, which was formerly believed to be the product of Neoglaciation, seems to be the relics of a lateral moraine, also formed during the Last Glaciation. (C) 2004 Elsevier Ltd and INQUA. All rights reserved.
关键词	PEDOGENIC CARBONATE MOUNTAINS SEDIMENTS CALCRETE VALLEY CHINA AGES TILL
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000222222900010
来源期刊	QUATERNARY INTERNATIONAL
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/454
推荐引用方式 GB/T 7714	Yi, CL,Liu, KX,Cui, ZJ,et al. AMS radiocarbon dating of late Quaternary glacial landforms, source of the Urumqi River, Tien Shan - a pilot study of C-14 dating on inorganic carbon[J]. 中国科学院青藏高原研究所,2004,121:99-107.
APA	Yi, CL,Liu, KX,Cui, ZJ,Jiao, KQ,Yao, TD,&He, YQ.(2004).AMS radiocarbon dating of late Quaternary glacial landforms, source of the Urumqi River, Tien Shan - a pilot study of C-14 dating on inorganic carbon.QUATERNARY INTERNATIONAL,121,99-107.
MLA	Yi, CL,et al."AMS radiocarbon dating of late Quaternary glacial landforms, source of the Urumqi River, Tien Shan - a pilot study of C-14 dating on inorganic carbon".QUATERNARY INTERNATIONAL 121(2004):99-107.