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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, GC (Dong, Guocheng)1,3; Huang, FX (Huang, Feixin)2; Yi, CL (Yi, Chaolu)4,5; Liu, XH (Liu, Xiaohan)4; Zhou, WJ (Zhou, Weijian)1,3; Caffee, MW (Caffee, Marc W.)6,7; Huang, FX
Source PublicationQUATERNARY SCIENCE REVIEWS
2016
Volume145Issue:0Pages:71-81
DOI10.1016/j.quascirev.2016.05.030
AbstractGlacial 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.
Subject Area自然地理学
WOS IDWOS:000380602700003
Language英语
Indexed BySCI
KeywordGlacial 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.
Cooperation Status国际
Department环境
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/7651
Collection图书馆
Corresponding AuthorHuang, FX
Affiliation1.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
Recommended Citation
GB/T 7714
Dong, GC ,Huang, FX ,Yi, CL ,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(0):71-81.
APA Dong, GC .,Huang, FX .,Yi, CL .,Liu, XH .,Zhou, WJ .,...&Huang, FX.(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(0),71-81.
MLA Dong, GC ,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 145.0(2016):71-81.
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