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Mid-late Pleistocene glacial evolution in the Grove Mountains, East Antarctica, constraints from cosmogenic Be-10 surface exposure dating of glacial erratic cobbles
Dong, Guocheng1,3; Huang, Feixin2; Yi, Chaolu4,5; Liu, Xiaohan4; Zhou, Weijian1,3; Caffee, Marc W.6,7
2016-08-01
发表期刊QUATERNARY SCIENCE REVIEWS
卷号145期号:2016页码:71-81
文章类型Article
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Mount Harding Grove Mountains East Antarctic Ice Sheet Cosmogenic Be-10 Exposure Dating Blue-ice Moraine
WOS标题词Science & Technology ; Physical Sciences
DOI10.1016/j.quascirev.2016.05.030
关键词[WOS]BLUE-ICE AREAS ; DRONNING MAUD LAND ; PRODUCTION-RATES ; VICTORIA LAND ; SHEET ; AGES ; NUCLIDES ; HISTORY ; DEGLACIATION ; THICKNESS
收录类别SCI
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
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5705
专题加速器质谱中心
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.China Met Geol Bur, Inst Mineral Resources Res, Beijing 101300, Peoples R China
3.Natl Ctr Accelerator Mass Spectrometry Xian, Shaanxi Prov Key Lab Accelerator Mass Spectrometr, Xian 710061, Peoples R China
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
6.Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA
7.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
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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]. QUATERNARY SCIENCE REVIEWS,2016,145(2016):71-81.
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(2016),71-81.
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(2016):71-81.
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