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DOI	10.1016/j.quaint.2013.12.019
	Optically stimulated luminescence dating of a moraine and a terrace in Laohugou valley, western Qilian Shan, northeastern Tibet
	Hu, Gang; Yi, Chao-Lu; Zhang, Jia-Fu; Liu, Jin-Hua; Jiang, Tao; Qin, Xiang
通讯作者	Yi, CL (通讯作者)
发表日期	2014
ISSN	1040-6182
EISSN	1873-4553
起始页码	37
结束页码	49
卷号	321
英文摘要	The Qilian Shan is one of the most important mountain ranges for understanding Quaternary glaciation in the northeastern Tibetan Plateau. However, its western part is not well studied. A moraine and an outwash terrace in the Laohugou valley were mapped, using geomorpho-stratigraphy, and dated by optically stimulated luminescence. After analyzing the minimum age and central age of coarse- and fine-grained quartz, most of the minimum ages for coarse grains are consistent with geomorpho-stratigraphic sequence, indicating they are closest to the true ages of the sediments. The lateral moraine was initially formed at 20.2 +/- 2.6 ka, during the Last Glacial Maximum, and was modified between 11.6 +/- 2.0 and 12.9 +/- 1.3 ka, in the Late Glacial. The outwash terrace was formed between 10.0 +/- 1.7 and 5.5 +/- 0.7 ka, and coincides with temperature rise in the early Holocene and the Holocene Optimum. At its Last Glacial Maximum, the palaeo-glacier was similar to 13.6 km long with an area of 45.3 km(2), 4.3 km longer and 34% larger than the contemporary glacier. The reconstructed palaeo-glacier equilibrium line altitude (ELA) was 4600 +/- 40 m, or 140 m lower than the present ELA. The glacier advance in the Laohugou valley was less extensive and ELA depression was less than found in the eastern Qilian Shan during LGM and Late Glacial, suggesting a drier climate during the Last Glacial. (C) 2013 Elsevier Ltd and INQUA. All rights reserved.
关键词	LATE QUATERNARY GLACIATIONS FLUVIAL SEDIMENTS COSMIC-RAY SINGLE OSL QUARTZ AGE DEPOSITS RANGE AREA
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000331853500006
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/258335
推荐引用方式 GB/T 7714	Hu, Gang,Yi, Chao-Lu,Zhang, Jia-Fu,et al. Optically stimulated luminescence dating of a moraine and a terrace in Laohugou valley, western Qilian Shan, northeastern Tibet[J]. 中国科学院青藏高原研究所,2014,321.
APA	Hu, Gang,Yi, Chao-Lu,Zhang, Jia-Fu,Liu, Jin-Hua,Jiang, Tao,&Qin, Xiang.(2014).Optically stimulated luminescence dating of a moraine and a terrace in Laohugou valley, western Qilian Shan, northeastern Tibet.QUATERNARY INTERNATIONAL,321.
MLA	Hu, Gang,et al."Optically stimulated luminescence dating of a moraine and a terrace in Laohugou valley, western Qilian Shan, northeastern Tibet".QUATERNARY INTERNATIONAL 321(2014).