Late glacial Be-10 ages for glacial landforms in the upper region of the   Taibai glaciation in the Qinling Mountain range, China

doi:10.1016/j.jseaes.2015.10.011

CORC > 北京大学 > 城市与环境学院

	Late glacial Be-10 ages for glacial landforms in the upper region of the Taibai glaciation in the Qinling Mountain range, China
	Zhang, Wei ; Liu, Liang ; Chen, Yixin ; Liu, Beibei ; Harbor, Jonathan M. ; Cui, Zhijiu ; Liu, Rui ; Liu, Xiao ; Zhao, Xu
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2016
关键词	Taibai Mountain Glacial landforms Be-10 Glacial retreat rates LGM LATE QUATERNARY GLACIATION SOUTHEASTERN TIBETAN PLATEAU LATE PLEISTOCENE GLACIATION PRODUCTION-RATE CALIBRATION COSMOGENIC NUCLIDE CONSTRAINTS PRODUCTION-RATES EXPOSURE AGES CLIMATIC DRIVERS EROSION RATES RIVER VALLEY
DOI	10.1016/j.jseaes.2015.10.011
英文摘要	Glacial landforms are well preserved on Taibai Mountain (3767 m), the main peak of the Qjnling mountain range located south of the Loess Plateau and east of the Qinghai-Tibet Plateau. The timing and extent of Quaternary glaciation in the study area is important for reconstructing Quaternary environmental change however numerical ages for glaciation in this study area have not previously been well resolved. Using terrestrial in situ cosmogenic nuclides we dated four samples collected from two glacially eroded rock steps in the upper part of a valley near the main peak, in an area previously identified as having been occupied by ice during the Taibai glaciation. The Be-10 results are all late glacial in age: 18.6 +/- 1.1 ka, 16.9 +/- 1.0 ka, 16.9 +/- 1.1 ka and 15.1 +/- 1.0 ka. The spatial pattern of ages in the valley suggests fast retreat, with horizontal and vertical retreat rates estimated to be on the order of 0.4 and 0.09 m a(-1), respectively. A simple extrapolation of these retreat rates from the ages at the two sample sites suggests that the glacier retreat began during Last Glacial Maximum and that glaciers disappeared from the main peak by about 15 ka. (c) 2015 Elsevier Ltd. All rights reserved.; National Natural Science Foundation of China (NSFC) [41271093, 41501068, 41230743, 40971010]; SCI(E); ARTICLE; liuliangdm@126.com; 383-392; 115
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/438992]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Zhang, Wei,Liu, Liang,Chen, Yixin,et al. Late glacial Be-10 ages for glacial landforms in the upper region of the Taibai glaciation in the Qinling Mountain range, China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2016.
APA	Zhang, Wei.,Liu, Liang.,Chen, Yixin.,Liu, Beibei.,Harbor, Jonathan M..,...&Zhao, Xu.(2016).Late glacial Be-10 ages for glacial landforms in the upper region of the Taibai glaciation in the Qinling Mountain range, China.JOURNAL OF ASIAN EARTH SCIENCES.
MLA	Zhang, Wei,et al."Late glacial Be-10 ages for glacial landforms in the upper region of the Taibai glaciation in the Qinling Mountain range, China".JOURNAL OF ASIAN EARTH SCIENCES (2016).