Climatic controls on travertine deposition in southern Tibet during the late Quaternary
文献类型：期刊论文
| 作者 | Wang, Zhijun4; Yin, Jian-Jun4; Cheng, Hai2,3,4; Ning, Youfeng3; Meyer, Michael C.1 |
| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 589页码:14 |
| ISSN号 | 0031-0182 |
| 关键词 | Tibet Travertine Uranium-series dating Hydrothermal springs Paleoclimate Monsoon |
| DOI | 10.1016/j.palaeo.2022.110852 |
| 通讯作者 | Wang, Zhijun(zhijun_wang@foxmail.com) ; Meyer, Michael C.(michael.meyer@uibk.ac.at) |
| 英文摘要 | Large volumes of travertine deposits are preserved at hydrothermal spring sites on the Tibetan Plateau (TP). Yet, most of these deposits are under-researched with respect to their diagenetic and depositional history and there is still very limited understanding of the tectonic and climatic influences on travertine precipitation in the arid high-altitude setting of Tibet. In this study, a detailed uranium-series dating campaign was carried out for the Qiusang travertine (similar to 4270 m above sea level), southern Tibet that has been previously dated back to 486 thousand years ago (ka). Based on 42 new Th-230/U ages, combined with geomorphological and sedimentological investigations, several travertine zones were identified and distinct travertine depositional phases constrained: 11.7-6.8 ka and similar to 13.4 ka (zone 1), 128-122 ka (zone 2),-193 ka (zone 3),similar to 292 ka and 324 ka (zone 4), > 317 ka (zone 5), ca. 415 to 470 ka (zone 6) and ca. 419 to 445 ka (zone 7). Comparison of these depositional phases with local and regional proxy records suggests that travertine accumulation at Qiusang occurred during main interglacials when monsoon precipitation peaked on the TP. This coincidence, together with a sensitive response of Tibetan hydrothermal spring activity to meteoric recharge, implies that climate controls the precipitation of large travertine volumes on orbital timescales on the plateau. We propose that (i) tectonic activity is of subor-dinate importance and influences travertine precipitation on the TP only episodically and on significantly shorter (i.e. centennial to millennial) timescales related to the recurrence rates of large earthquakes and that (ii) intensive monsoonal-driven groundwater recharge is required on top of tectonic activity for generating volu-metrically significant travertine accumulations. Because of the high precipitation rates typical for hydrothermal spring carbonates, we conclude that travertine deposits on the TP could be utilized as valuable high-resolution proxy records of peak monsoon conditions in the currently arid to semi-arid landscape.& nbsp;Furthermore, the Qiusang travertine zone 7 is terraced and the travertine layers adjusted to a paleo-riverbed elevation similar to 30 m above the current river, allowing us to constrain fluvial incision to-0.07 m/ka for the south -central sector of the TP since the Mid-Pleistocene. The abundant travertine occurrences in Tibet in combination with uranium-series dating can thus also provide detailed insights into earth surface dynamics and landscape evolution on the world highest plateau. |
| WOS关键词 | GEOTHERMAL WATERS ; SUMMER MONSOON ; LAKE SYSTEM ; HALF-LIVES ; PLATEAU ; CIRCULATION ; PRECIPITATION ; VARIABILITY ; SPRINGS ; VALUES |
| 资助项目 | National Natural Science Foundation of China[41807426] ; Special Fund for Basic Scientific Research of Institute of Karst Geology, CAGS[2021002] ; Guangxi Natural Science Foundation[2018GXNSFBA050004] |
| WOS研究方向 | Physical Geography ; Geology ; Paleontology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000788013600001 |
| 资助机构 | National Natural Science Foundation of China ; Special Fund for Basic Scientific Research of Institute of Karst Geology, CAGS ; Guangxi Natural Science Foundation |
| 源URL | [http://ir.ieecas.cn/handle/361006/17713]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 通讯作者 | Wang, Zhijun; Meyer, Michael C. |
| 作者单位 | 1.Univ Innsbruck, Inst Geol, A-6020 Innsbruck, Austria 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 3.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710054, Peoples R China 4.Chinese Acad Geol Sci, Inst Karst Geol, Key Lab Karst Dynam, Minist Nat Resources & Guangxi, Guilin 541004, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhijun,Yin, Jian-Jun,Cheng, Hai,et al. Climatic controls on travertine deposition in southern Tibet during the late Quaternary[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2022,589:14. |
| APA | Wang, Zhijun,Yin, Jian-Jun,Cheng, Hai,Ning, Youfeng,&Meyer, Michael C..(2022).Climatic controls on travertine deposition in southern Tibet during the late Quaternary.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,589,14. |
| MLA | Wang, Zhijun,et al."Climatic controls on travertine deposition in southern Tibet during the late Quaternary".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 589(2022):14. |
入库方式： OAI收割
来源：地球环境研究所
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