Miocene climate change on the Chinese Loess Plateau: Possiblelinks to the growth of the northern Tibetan Plateau and globalcooling | |
Sun,YB(Sun,Youbin)[1,2]; Ma,L(Ma,Long)[1,3]; Bloemendal,J(Bloemendal,Jan)[4]; Clemens,S(Clemens,Steven)[5]; Qiang,XK(Qiang,Xiaoke)[1]; An,ZS(An,Zhisheng)[1] | |
2015-07-06 | |
发表期刊 | Geochemistry, Geophysics, Geosystems |
页码 | 2097-2108 |
文章类型 | 期刊论文 |
摘要 | The evolution of the Asian monsoon-arid environmental system during the Cenozoic was closely related to the growth of the Himalayan-Tibetan Plateau and global climate change. However, due to inconsistencies in paleoclimatic reconstructions and to various constraints on the timing of the growth of the Tibetan Plateau, the relative impacts of regional uplift and global cooling on Asian climate change remain controversial. Here we investigate the mineralogical composition of a Miocene Red Clay deposit on the western Chinese Loess Plateau in order to infer changes in chemical weathering and monsoon intensity. Variations of four mineralogical ratios (chlorite/quartz, illite/quartz, calcite/quartz, and protodolomite/quartz) reveal that the summer monsoon intensity was relatively strong during the early Miocene (23.5–18.5 Ma), weakened gradually until 9.5 Ma, and strengthened again in the late Miocene. We synthesized previously published thermochronological data from the northeastern Tibetan Plateau and surrounding mountains, and the results suggest that two phases of the rapid growth of northern Tibet occurred around 24–17 and 13–7 Ma. Comparison of paleoclimatic proxies and thermochronological data suggests that the gradual weakening of the summer monsoon intensity from 18.5 to 9.5 Ma paralleled global cooling, whereas two intervals of strengthened monsoon in the early and late Miocene were possibly related to the rapid growth of northern Tibet. Our combination of paleoenvironmental proxies and thermochronological data reveals possible links between Miocene Asian monsoon evolution, phased growth of the Tibetan Plateau, and global climate change, and confirms the interconnection of geodynamic and atmospheric processes in the geological past. |
DOI | 10.1002/2015GC005750 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9491 |
专题 | 古环境研究室 |
作者单位 | 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences,Xi’an, China; 2.Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, China; 3.College of Earth Science,University of Chinese Academy of Sciences, Beijing, China; 4.Department of Geography and Planning, University ofLiverpool, Liverpool, UK; 5.Department of Earth, Environmental and Planetary Sciences, Brown University, Providence,Rhode Island, USA |
推荐引用方式 GB/T 7714 | Sun,YB,Ma,L,Bloemendal,J,et al. Miocene climate change on the Chinese Loess Plateau: Possiblelinks to the growth of the northern Tibetan Plateau and globalcooling[J]. Geochemistry, Geophysics, Geosystems,2015:2097-2108. |
APA | Sun,YB,Ma,L,Bloemendal,J,Clemens,S,Qiang,XK,&An,ZS.(2015).Miocene climate change on the Chinese Loess Plateau: Possiblelinks to the growth of the northern Tibetan Plateau and globalcooling.Geochemistry, Geophysics, Geosystems,2097-2108. |
MLA | Sun,YB,et al."Miocene climate change on the Chinese Loess Plateau: Possiblelinks to the growth of the northern Tibetan Plateau and globalcooling".Geochemistry, Geophysics, Geosystems (2015):2097-2108. |
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Miocene climate chan(5052KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
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