Post-glacial entrenchment and knickpoint migration of the Yarlung Tsangpo Gorge, southeastern Tibetan Plateau
文献类型：期刊论文
| 作者 | Xu, Qinqin1,4; Ji, Jianqing3; Zhong, Dalai4; Hu, Yan3; Deino, Alan2; Chen, Jianjun3; Tu, Jiyao3; Liu, Haichao3; Wang, Fengyi3; Sun, Dongxia4 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2020-06-15 |
| 卷号 | 195页码:23 |
| ISSN号 | 1367-9120 |
| 关键词 | Paleolake River capture Climate Fluvial incision Yarlung Tsangpo Gorge |
| DOI | 10.1016/j.jseaes.2020.104337 |
| 英文摘要 | The formation of the Yarlung Tsangpo river system is commonly thought to be controlled by tectonic processes initiated several million years ago. However, climate change may also play an important role in guiding drainage evolution. Here we reconstruct the drainage history of the Yarlung Tsangpo Gorge using field observations, age constraints from optically stimulated luminescence and radiocarbon dating, paleosalinity reconstruction and grain size analysis of lacustrine deposits, and river valley characteristics. Field observations, clay boron-derived paleosalinity reconstruction and grain size analysis of lacustrine deposits demonstrate that a closed inland saline lake existed upstream of the Yarlung Tsangpo Gorge, implying that cutting of the gorge postdated this paleolake. Optically stimulated luminescence and radiocarbon dating suggest that the paleolake formed at least 51 ka and terminated after similar to 13 ka. With a shift in global climate following the Last Glacial Maximum, the paleolake drained by river capture, and the gorge entrenchment commenced at the village of Jiala northwest of the Namche Barwa peak, approximately 13-10 ka ago. The evolution of the Yarlung Tsangpo occurred on a remarkably short timescale of just tens of thousands of years. In response to drainage system reorganization, the Yarlung Tsangpo incised at an average rate of at least 26 mm/yr. The rapid fluvial incision initiated at Jiala similar to 13 ka ago propagated rapidly upstream at similar to 2.12 m/yr. The Yarlung Tsangpo knickpoint has not stabilized, but will likely continue to migrate upstream. |
| WOS关键词 | EASTERN HIMALAYAN SYNTAXIS ; NAMCHE-BARWA SYNTAXIS ; LAKE-LEVEL CHANGES ; LATE PLEISTOCENE ; RIVER INCISION ; GRAIN-SIZE ; YELLOW-RIVER ; FLUVIAL INCISION ; DAMMED LAKE ; ROCK UPLIFT |
| 资助项目 | National Natural Science Foundation of China[41302280] ; National Natural Science Foundation of China[41472175] ; National Natural Science Foundation of China[41630104] ; China Geological Survey[DD20190358] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000536141200009 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/96687]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Xu, Qinqin; Ji, Jianqing |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Geol, MNR Key Lab Deep Earth Dynam, Beijing 100037, Peoples R China 2.Berkeley Geochronol Ctr, Berkeley, CA 94709 USA 3.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Qinqin,Ji, Jianqing,Zhong, Dalai,et al. Post-glacial entrenchment and knickpoint migration of the Yarlung Tsangpo Gorge, southeastern Tibetan Plateau[J]. JOURNAL OF ASIAN EARTH SCIENCES,2020,195:23. |
| APA | Xu, Qinqin.,Ji, Jianqing.,Zhong, Dalai.,Hu, Yan.,Deino, Alan.,...&Sun, Dongxia.(2020).Post-glacial entrenchment and knickpoint migration of the Yarlung Tsangpo Gorge, southeastern Tibetan Plateau.JOURNAL OF ASIAN EARTH SCIENCES,195,23. |
| MLA | Xu, Qinqin,et al."Post-glacial entrenchment and knickpoint migration of the Yarlung Tsangpo Gorge, southeastern Tibetan Plateau".JOURNAL OF ASIAN EARTH SCIENCES 195(2020):23. |
入库方式： OAI收割
来源：地质与地球物理研究所
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