Late Oligocene mountain building of the East Kunlun Shan in northeastern Tibet: Impact on the Cenozoic climate evolution in East Asia
文献类型：期刊论文
| 作者 | Li, Chaopeng1,2,4; Zheng, Dewen1,4; Yu, Jingxing2; Zhou, Renjie3; Wang, Yizhou2; Pang, Jianzhang2; Wang, Ying2; Hao, Yuqi2; Xu, Yi-Gang1,4 |
| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 224页码:12 |
| 关键词 | Northeastern Tibet East Kunlun Shan Apatite(U-Th)/He Climate reorganization |
| ISSN号 | 0921-8181 |
| DOI | 10.1016/j.gloplacha.2023.104114 |
| 英文摘要 | The role of northern Tibet in the Cenozoic climate evolution in East Asia remains controversial owing to a lack of constraints on the timing and pattern of mountain building. The East Kunlun Shan (EKLS) defines the geomorphological boundary of the northeastern Tibetan Plateau. We employed apatite (U-Th)/He thermochronology to analyze the exhumation history and pattern across the EKLS. In this study, we presented 28 mean apatite (U-Th)/He ages of bedrock, including seven previously published ages. Observed ages decrease with the decreased distance from the Kunlun strike-slip fault (34.0 to 20.4 Ma). Age-elevation relationships and thermal modeling demonstrate that exhumation rates in the EKLS and in restraining bends along the Kunlun strike-slip fault increased by a factor of 5-10, reaching similar to 200 m/Myr at similar to 26 Ma. These exhumation patterns support the idea that mountain building of the EKLS initiated in the Late Oligocene through northward tilting around the same time with strike-slip motion along the Kunlun fault. When combined with existing geological data, our findings suggest that the northern margin of high Tibet expanded from Tanggula Shan to EKLS-West Qinling during the Late Oligocene to Early Miocene. This period coincides with the initial accumulation of loess at the front of northern Tibet and the northward expansion of the monsoon region in adjacent East China. Therefore, our work supports the notion that the northward growth of Tibet may have played a role in the Late Oligocene-Early Miocene climate reorganization in East Asia. |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000983503300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74224]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Li, Chaopeng |
| 作者单位 | 1.Chinese Acad Sci, Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 2.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing 100029, Peoples R China 3.Univ Queensland, Sch Earth & Environm Sci, St Lucia, Qld 4072, Australia 4.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Chaopeng,Zheng, Dewen,Yu, Jingxing,et al. Late Oligocene mountain building of the East Kunlun Shan in northeastern Tibet: Impact on the Cenozoic climate evolution in East Asia[J]. GLOBAL AND PLANETARY CHANGE,2023,224:12. |
| APA | Li, Chaopeng.,Zheng, Dewen.,Yu, Jingxing.,Zhou, Renjie.,Wang, Yizhou.,...&Xu, Yi-Gang.(2023).Late Oligocene mountain building of the East Kunlun Shan in northeastern Tibet: Impact on the Cenozoic climate evolution in East Asia.GLOBAL AND PLANETARY CHANGE,224,12. |
| MLA | Li, Chaopeng,et al."Late Oligocene mountain building of the East Kunlun Shan in northeastern Tibet: Impact on the Cenozoic climate evolution in East Asia".GLOBAL AND PLANETARY CHANGE 224(2023):12. |
入库方式： OAI收割
来源：广州地球化学研究所
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