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DOI	10.1016/j.quascirev.2016.05.030
	Mid-late Pleistocene glacial evolution in the Grove Mountains, East Antarctica, constraints from cosmogenic Be-10 surface exposure dating of glacial erratic cobbles
	Dong, Guocheng; Huang, Feixin; Yi, Chaolu; Liu, Xiaohan; Zhou, Weijian; Caffee, Marc W.
通讯作者	Huang, FX (通讯作者)
发表日期	2016
ISSN	0277-3791
起始页码	71
结束页码	81
卷号	145
英文摘要	Glacial histories from the East Antarctic Ice Sheet (EAIS) provide keys to understanding correlations between the EATS and global climate. They are especially helpful in the assessment of global sea level change, and as a means of quantifying the magnitude of past glacial activity and the rate at which ice responded to climate change. Given the significance of EAIS glacial histories, it is imperative that more glacial chronologic data for this region be obtained, especially for the mid-to-late Pleistocene. We report cosmogenic Be-10 surface exposure dating results from glacially transported cobbles embedded in blue-ice moraine material at Mount Harding, the Grove Mountains, EAIS. Forty exotic cobbles sampled along two profiles (A and B) on this blue-ice moraine present apparent exposure-ages ranging from 7.2 to 542.2 ka. We explore this scattered dataset by using Principal Component Analysis (PCA) to identify statistically significant trends in the data. We identify a correlation between exposure-age and distance of the cobbles from Mount Harding. In profile A, cobbles further from Mount Harding yield older exposure-ages than those that are relatively close. In profile B, cobbles closer to Mount Harding are found to have relatively older exposure-ages. In term of glacial history we suggest that the direction of ice flow changed during the period from similar to 60 to 200 ka, and that multiple glacial fluctuations occurred in the mid-late Pleistocene. (C) 2016 Elsevier Ltd. All rights reserved.
关键词	BLUE-ICE AREAS DRONNING MAUD LAND PRODUCTION-RATES VICTORIA LAND SHEET AGES NUCLIDES HISTORY DEGLACIATION THICKNESS
英文关键词	Mount Harding; Grove Mountains; East Antarctic ice sheet; Cosmogenic Be-10 exposure dating; Blue-ice moraine
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000380602700003
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/258795
推荐引用方式 GB/T 7714	Dong, Guocheng,Huang, Feixin,Yi, Chaolu,et al. Mid-late Pleistocene glacial evolution in the Grove Mountains, East Antarctica, constraints from cosmogenic Be-10 surface exposure dating of glacial erratic cobbles[J]. 中国科学院青藏高原研究所,2016,145.
APA	Dong, Guocheng,Huang, Feixin,Yi, Chaolu,Liu, Xiaohan,Zhou, Weijian,&Caffee, Marc W..(2016).Mid-late Pleistocene glacial evolution in the Grove Mountains, East Antarctica, constraints from cosmogenic Be-10 surface exposure dating of glacial erratic cobbles.QUATERNARY SCIENCE REVIEWS,145.
MLA	Dong, Guocheng,et al."Mid-late Pleistocene glacial evolution in the Grove Mountains, East Antarctica, constraints from cosmogenic Be-10 surface exposure dating of glacial erratic cobbles".QUATERNARY SCIENCE REVIEWS 145(2016).