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Crustal-scale wedge tectonics at the narrow boundary between the Tibetan Plateau and Ordos block

文献类型：期刊论文

作者Tian, Xiaobo6,7; Bai, Zhiming6; Klemperer, Simon L.8; Liang, Xiaofeng6; Liu, Zhen1; Wang, Xiao2; Yang, Xusong3,6; Wei, Yunhao3,4,6; Zhu, Gaohua5
刊名EARTH AND PLANETARY SCIENCE LETTERS
出版日期2021-01-15
卷号554页码:10
ISSN号0012-821X
关键词Tibetan Plateau Ordos block receiver function crustal deformation crustal-scale wedge dense nodal seismic array
DOI10.1016/j.epsl.2020.116700
英文摘要The Tibetan plateau is bounded in part by cratonic blocks, and in part by tectonothermally younger and weaker crust. How the Tibetan plateau interacts with bordering non-cratonic crust is a continuing debate, whether the plateau is currently enlarging its area, and if so, whether by thrusting or by lower-crustal flow, or both. The gently sloping northeastern margin of Tibet has been inferred to incorporate a lower-crustal channel flow outward towards the Ordos block that is a part of the North China Craton. We calculated receiver functions using teleseismic waveforms recorded by a dense nodal seismic array crossing from the Longxi basin of northeastern Tibet across a transition zone marked by the Liupan Shan (mountains) into the Ordos block. Our image shows the Longxi upper crust overthrusts onto the Ordos block building the Liupan Shan, and the Longxi lower crust underthrusts beneath the Ordos forming a 10-km thick crustal root. The Ordos crust forms a crustal-scale wedge inserted into the Longxi crust, and deformation is limited to a narrow zone of <50 km either side of the Liupan Shan. Convergence between the Longxi Basin and Ordos block is producing a narrow mountain range rather than broadening the plateau. The larger-scale gentle topography is likely an expression of negligible crustal deformation of the Longxi basin. Even if the Longxi basin of NE Tibet, between the Qaidam and Sichuan basins, is underlain by a weak lower crust, tunneling channel flow does not extend beyond the Liupan Shan, and the Tibetan Plateau has not grown outward beneath the Ordos block. (C) 2020 Elsevier B.V. All rights reserved.
WOS关键词NORTH CHINA CRATON ; UPPER-MANTLE STRUCTURE ; STRUCTURE BENEATH ; NORTHEASTERN MARGIN ; AUTONOMOUS REGION ; FAULT ZONE ; DEFORMATION ; EVOLUTION ; COLLISION ; AREA
资助项目China Earthquake Administration[201408023] ; National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41974053]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者ELSEVIER
WOS记录号WOS:000604582500043
资助机构China Earthquake Administration ; China Earthquake Administration ; China Earthquake Administration ; China Earthquake Administration ; 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 Earthquake Administration ; China Earthquake Administration ; China Earthquake Administration ; China Earthquake Administration ; 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 Earthquake Administration ; China Earthquake Administration ; China Earthquake Administration ; China Earthquake Administration ; 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 Earthquake Administration ; China Earthquake Administration ; China Earthquake Administration ; China Earthquake Administration ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/99991]  
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Tian, Xiaobo; Klemperer, Simon L.
作者单位1.Chengdu Univ Technol, Coll Geophys, Chengdu 610059, Peoples R China
2.China Earthquake Networks Ctr, Beijing 100045, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.China Earthquake Adm, Geophys Explorat Ctr, Zhengzhou 450002, Peoples R China
5.Chinese Univ Hong Kong, Fac Sci, Earth Syst Sci Programme, Hong Kong, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
7.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
8.Stanford Univ, Dept Geophys, Stanford, CA 94305 USA
推荐引用方式
GB/T 7714		 Tian, Xiaobo,Bai, Zhiming,Klemperer, Simon L.,et al. Crustal-scale wedge tectonics at the narrow boundary between the Tibetan Plateau and Ordos block[J]. EARTH AND PLANETARY SCIENCE LETTERS,2021,554:10.
APA Tian, Xiaobo.,Bai, Zhiming.,Klemperer, Simon L..,Liang, Xiaofeng.,Liu, Zhen.,...&Zhu, Gaohua.(2021).Crustal-scale wedge tectonics at the narrow boundary between the Tibetan Plateau and Ordos block.EARTH AND PLANETARY SCIENCE LETTERS,554,10.
MLA Tian, Xiaobo,et al."Crustal-scale wedge tectonics at the narrow boundary between the Tibetan Plateau and Ordos block".EARTH AND PLANETARY SCIENCE LETTERS 554(2021):10.

入库方式： OAI收割

来源：地质与地球物理研究所

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