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Cosmogenic nuclide constraints on glacial chronology in the source area of the Urumqi River, Tian Shan, China

文献类型：期刊论文

作者Li, Yingkui1; Liu, Gengnian2; Kong, Ping3; Harbor, Jon4; Chen, Yixin2; Caffee, Marc4,5
刊名JOURNAL OF QUATERNARY SCIENCE
出版日期2011-04-01
卷号26期号:3页码:297-304
关键词(10)Be Dating Alpine Glaciers Asian Glaciation Landform Evolution Tian Shan
ISSN号0267-8179
DOI10.1002/jqs.1454
文献子类Article
英文摘要Cosmogenic nuclide surface exposure dating of boulders and erratics provides new constraints for a glacial chronology in the source area of the Urumqi River, Tian Shan, China. (10)Be exposure ages of 15.0 +/- 1.3-17.1 +/- 1.5 ka from the Upper Wangfeng (UWF) moraines agree well with their previous relative age assignments to marine isotope stage (MIS) 2, but are younger than published ANIS (14)C and electron spin resonance (ESR) ages (from 22.8 +/- 0.6 to 37.4 ka). This difference may result from variations in techniques, or could reflect the impact of surface erosion and sediment/snow cover on surface exposure dating. (10)Be ages from the Lower Wangfeng (LWF) moraines (18.7 +/- 1.8 and 16.2 +/- 1.5 ka) are indistinguishable from the UWF exposure ages, but are significantly younger than previously reported thermoluminescence (TL) and ESR ages (37.7 +/- 2.6-184.7 +/- 18 ka). Either these two groups were formed during the same period (MIS 2) and there are problems with TL and ESR ages, or the moraines were of very different ages and the similar exposure ages result from different degrees of degradation. Erratics on rock steps and a drumlin along > 8 km of the main glacial valley above the UWF have internally consistent and slightly decreasing (10)Be exposure ages indicating glacier retreat: > 2.5 m a(-1) after MIS 2 and before middle or late Holocene glacier re-advances. This retreat rate is similar to rates observed from modern glaciers. Copyright (c) 2011 John Wiley & Sons, Ltd.
WOS关键词LATE QUATERNARY GLACIATION ; SURFACE EXPOSURE AGES ; TIEN-SHAN ; LANDSCAPE EVOLUTION ; CENTRAL-ASIA ; BE-10 ; MOUNTAINS ; TIBET ; PLEISTOCENE ; LANDFORMS
WOS研究方向Geology ; Paleontology
语种英语
WOS记录号WOS:000290074000007
出版者WILEY-BLACKWELL
资助机构Research Board of the University of Missouri(RB 07-50) ; Research Board of the University of Missouri(RB 07-50) ; National Science Foundation of China(40571014 ; National Science Foundation of China(40571014 ; 40971002) ; 40971002) ; Research Board of the University of Missouri(RB 07-50) ; Research Board of the University of Missouri(RB 07-50) ; National Science Foundation of China(40571014 ; National Science Foundation of China(40571014 ; 40971002) ; 40971002) ; Research Board of the University of Missouri(RB 07-50) ; Research Board of the University of Missouri(RB 07-50) ; National Science Foundation of China(40571014 ; National Science Foundation of China(40571014 ; 40971002) ; 40971002) ; Research Board of the University of Missouri(RB 07-50) ; Research Board of the University of Missouri(RB 07-50) ; National Science Foundation of China(40571014 ; National Science Foundation of China(40571014 ; 40971002) ; 40971002)
源URL[http://ir.iggcas.ac.cn/handle/132A11/73616]  
专题中国科学院地质与地球物理研究所
通讯作者Li, Yingkui
作者单位1.Univ Tennessee, Dept Geog, Knoxville, TN 37996 USA
2.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
4.Purdue Univ, Dept Earth & Atmospher Sci, W Lafayette, IN 47907 USA
5.Purdue Univ, Dept Phys, PRIME Lab, W Lafayette, IN 47907 USA
推荐引用方式
GB/T 7714		 Li, Yingkui,Liu, Gengnian,Kong, Ping,et al. Cosmogenic nuclide constraints on glacial chronology in the source area of the Urumqi River, Tian Shan, China[J]. JOURNAL OF QUATERNARY SCIENCE,2011,26(3):297-304.
APA Li, Yingkui,Liu, Gengnian,Kong, Ping,Harbor, Jon,Chen, Yixin,&Caffee, Marc.(2011).Cosmogenic nuclide constraints on glacial chronology in the source area of the Urumqi River, Tian Shan, China.JOURNAL OF QUATERNARY SCIENCE,26(3),297-304.
MLA Li, Yingkui,et al."Cosmogenic nuclide constraints on glacial chronology in the source area of the Urumqi River, Tian Shan, China".JOURNAL OF QUATERNARY SCIENCE 26.3(2011):297-304.

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来源：地质与地球物理研究所

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