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  4. 深部资源勘探装备研发
A top-down control on upper crustal inheritance on the south-eastern Tibetan Plateau

文献类型：期刊论文

作者Di, Qingyun2,7; Zhang, Kun1,3,4,5; Xue, Guoqiang2; An, Zhiguo2; Fu, Changmin2; Guo, Wenbo6; Zhang, Sanmin6
刊名TECTONOPHYSICS
出版日期2023-09-20
卷号863页码:12
ISSN号0040-1951
关键词Ailao Shan -Red River fault belt 3D geo-electrical model from magnetotelluric sounding Suture reworking Upper crustal translation -rotation process
DOI10.1016/j.tecto.2023.229992
英文摘要Mantle tectonics, such as asthenospheric upwelling and lithospheric decoupling, usually controls subsequent fluid formation and migration from deep to shallow levels in the lower lithosphere and promotes rock failure and deformation. Based on the concept whereby the fluid migration location defines the structural inheritance, we aim to relate crustal processes to mantle tectonics using fluids revealed by a new magnetotelluric (MT) array across the Ailao Shan-Red River belt. As imaged via a 3D resistivity model, two lower-lithospheric conductive anomalies are determined as consistent with the Dian-Qiong (DQ) suture and Song Da (SD) belt and interpreted to contain interconnected melt. Because potassic magmatism was enabled by partial melting in the lower lithosphere, we could infer that the DQ and SD have reworked as the major fluid migration channels. Fluid migration is considered to drive lithospheric decoupling at a low-viscosity conductive layer, which is inferred feeding by aqueous and melt fluids originating from the two channels and diffusing at depths from 15 to 20 km. Constrained by the geochronology results, this weak layer could have provided convenience to induce the entirely upper crustal translation-rotation within the time interval between potassic magmatism and strike-slip of the Red River fault. This translation-rotation process is inherited from the underlying mantle processes and may further be remotely affected by the upper crustal movement of the Tibetan Plateau, conforming with the crustal rotation observed to the north of our study region. This work provides a compelling example of the tectonic control of the mantle on inherited responses in the crust. Plain Language Summary Crustal deformation is usually controlled by mantle tectonic processes, especially the southeastern Tibetan Plateau. Some models have proposed that lithospheric shearing and lower-crustal flow have controlled the crustal deformation in the Cenozoic. However, crustal rotation models show less possibility of a channel flow and relate the crustal deformation to the remote effect of India-Asia collision. Our study investigates above hypotheses by imaging the electrical resistivity of rocks beneath the major Red River Fault area in southeastern Tibet, using magnetotelluric data with high quality in a dense array. The lithosphere of the study area is interpreted to have been divided into two horizontal systems by a fluid diffusion layer at the bottom of upper crust. Resistivity low in the lower lithosphere is inferred due to partial melting of deep lithosphere and reworking of the paleo sutures in the Late Cenozoic, which have spread at the bottom of upper crust. Rather than the channel flow, this fluid migration process sensitively reflected in our model relates the mantle tectonics to crustal rotation by providing rheological conditions. We, hence, propose an inherited structure model featured by lithospheric decoupling and upper-crustal translation-rotation that may occur before the major strike-slip event.
WOS关键词RIVER SHEAR ZONE ; INDO-CHINA ; ELECTRICAL-CONDUCTIVITY ; GEOELECTRIC STRUCTURE ; BENEATH ; DEFORMATION ; YUNNAN ; SUBDUCTION ; COLLISION ; MANTLE
资助项目Scientific Instrument Developing Project of the Chinese Academy of Sciences[42174087] ; National Science Program[KLGEPT202203] ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; [ZDZBGCH2018006]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者ELSEVIER
WOS记录号WOS:001058641700001
资助机构Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; National Science Program ; National Science Program ; National Science Program ; National Science Program ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; National Science Program ; National Science Program ; National Science Program ; National Science Program ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; National Science Program ; National Science Program ; National Science Program ; National Science Program ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; National Science Program ; National Science Program ; National Science Program ; National Science Program ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources ; High -Level Scientific and Technological Innovation Talents Project of the Ministry of Natural Resources and Key Laboratory of Geophysical Electromagnetic Probing Technologies of Ministry of Natural Resources
源URL[http://ir.iggcas.ac.cn/handle/132A11/111443]  
专题地质与地球物理研究所_深部资源勘探装备研发
地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Zhang, Kun; Xue, Guoqiang
作者单位1.Chinese Acad Geol Sci, Inst Geol, Baiwanzhuang Rd 26, Beijing 100037, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Chinese Acad Geol Sci, Beijing 100037, Peoples R China
4.Minist Nat Resources Peoples Republ China, Lab Deep Earth Sci & Technol, Beijing 100037, Peoples R China
5.Minist Nat Resources Peoples Republ China, Key Lab Geophys Electromagnet Probing Technol, Langfang 065000, Peoples R China
6.Northwest Nonferrous Geol & Mineral Grp, Geophys & Geochem Explorat Corp, Xian 710068, Peoples R China
7.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Di, Qingyun,Zhang, Kun,Xue, Guoqiang,et al. A top-down control on upper crustal inheritance on the south-eastern Tibetan Plateau[J]. TECTONOPHYSICS,2023,863:12.
APA Di, Qingyun.,Zhang, Kun.,Xue, Guoqiang.,An, Zhiguo.,Fu, Changmin.,...&Zhang, Sanmin.(2023).A top-down control on upper crustal inheritance on the south-eastern Tibetan Plateau.TECTONOPHYSICS,863,12.
MLA Di, Qingyun,et al."A top-down control on upper crustal inheritance on the south-eastern Tibetan Plateau".TECTONOPHYSICS 863(2023):12.

入库方式： OAI收割

来源：地质与地球物理研究所

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