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The timing and cause of glacial activity during the last glacial in central Tibet based on Be-10 surface exposure dating east of Mount Jaggang, the Xainza range
Dong, Guocheng1,2; Zhou, Weijian1,2,3; Yi, Chaolu4,5; Fu, Yunchong1,2; Zhang, Li1,2; Li, Ming1,2
2018-04-15
发表期刊QUATERNARY SCIENCE REVIEWS
卷号186期号:4页码:284-297
文章类型Article
摘要Mountain glaciers are sensitive to climate change, and can provide valuable information for inferring former climates on the Tibetan Plateau (TP). The increasing glacial chronologies indicate that the timing of the local Last Glacial Maximum (LGM) recorded across the TP is asynchronous, implying different local influences of the mid-latitude westerlies and Asian Summer Monsoon in triggering glacier advances. However, the well-dated sites are still too few, especially in the transition zone between regions controlled by the two climate systems. Here we present detailed last glacial chronologies for the Mount Jaggang area, in the Xainza range, central Tibet, with forty-three apparent Be-10 exposure-ages ranging from 12.4 +/- 0.8 ka to 61.9 +/- 3.8 ka. These exposure-ages indicate that at least seven glacial episodes occurred during the last glacial cycle east of Mount Jaggang. These include: a local LGM that occurred at similar to 61.9 +/- 3.8 ka, possibly corresponding to Marine Isotope Stage 4 (MIS 4); subsequent glacial advances at similar to 43.2 +/- 2.6 ka and similar to 35.1 +/- 2.1 ka during MIS 3; one glacial re-advance/standstill at MIS3/2 transition (similar to 29.8 +/- 1.8 ka); and three glacial re-advances/standstills that occurred following MIS 3 at similar to 27.9 +/- 1.7 ka, similar to 21.8 +/- 13 ka, and similar to 15.1 +/- 0.9 ka. The timing of these glacial activities is roughly in agreement with North Atlantic millennial-scale climate oscillations (Heinrich events), suggesting the potential correlations between these abrupt climate changes and glacial fluctuations in the Mount Jaggang area. The successively reduced glacial extent might have resulted from an overall decrease in Asian Summer Monsoon intensity over this timeframe. (C) 2018 Elsevier Ltd. All rights reserved.
关键词Be-10 Surface Exposure Dating The Last Glacial Heinrich Events Mount Jaggang Central Tibet
WOS标题词Science & Technology ; Physical Sciences
DOI10.1016/j.quascirev.2018.03.007
关键词[WOS]STIMULATED LUMINESCENCE DATINGS ; LATE PLEISTOCENE GLACIATIONS ; LATE QUATERNARY GLACIATION ; SITU COSMOGENIC NUCLIDES ; NORTH-ATLANTIC ; PRODUCTION-RATES ; TIAN-SHAN ; ICE-AGE ; NYAINQENTANGLHA MOUNTAINS ; TASHKURGAN VALLEY
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:000430770000018
引用统计
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/361006/5173
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, Shaanxi, Peoples R China
2.Xian AMS Ctr, Xian 710061, Shaanxi, Peoples R China
3.Beijing Normal Univ, Beijing 100875, Peoples R China
4.Chinese Acad Sci, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
5.Chinese Acad Sci, Excellence Ctr Tibetan Plateau Res, Beijing 100101, Peoples R China
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Dong, Guocheng,Zhou, Weijian,Yi, Chaolu,et al. The timing and cause of glacial activity during the last glacial in central Tibet based on Be-10 surface exposure dating east of Mount Jaggang, the Xainza range[J]. QUATERNARY SCIENCE REVIEWS,2018,186(4):284-297.
APA Dong, Guocheng,Zhou, Weijian,Yi, Chaolu,Fu, Yunchong,Zhang, Li,&Li, Ming.(2018).The timing and cause of glacial activity during the last glacial in central Tibet based on Be-10 surface exposure dating east of Mount Jaggang, the Xainza range.QUATERNARY SCIENCE REVIEWS,186(4),284-297.
MLA Dong, Guocheng,et al."The timing and cause of glacial activity during the last glacial in central Tibet based on Be-10 surface exposure dating east of Mount Jaggang, the Xainza range".QUATERNARY SCIENCE REVIEWS 186.4(2018):284-297.
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