Crustal velocity structure of Cathaysia Block from an active-source seismic profile between Wanzai and Hui'an in SE China
文献类型：期刊论文
| 作者 | Lin, Jiyan1,4,8; Xu, Tao1,3; Cai, Huiteng7; Lu, Qingtian6; Bai, Zhiming1; Deng, Yangfan5; Zhang, Yongqian6; Huang, Minfu1,4; Badal, Jose2; Jin, Xing7 |
| 刊名 | TECTONOPHYSICS
 |
| 出版日期 | 2021-07-20 |
| 卷号 | 811页码:12 |
| 关键词 | Wide-angle reflection and refraction P-wave velocity structure Tectonic boundaries Cathaysia SE China |
| ISSN号 | 0040-1951 |
| DOI | 10.1016/j.tecto.2021.228874 |
| 英文摘要 | With the purpose of exploring the widely distributed Mesozoic granitoids in SE China and the related mineralization, we carried out a new 530-km-long seismic wide-angle reflection and refraction (WARR) profile along the transect Wanzai-Hui'an. Based on a previous exploration in 2012 and the analysis of this WARR profile, we have deduced a detailed P-wave velocity model of the crust and uppermost mantle. The main results are: (1) The crustal thickness is about 30 to 32 km beneath the Yangtze Block and West Cathaysia, and 29 to 30 km below the East Cathaysia, which represents a significant thinning with respect to the worldwide average thickness of shields and platforms. (2) The variation in seismic velocity between the upper crust and middle-lower crust in the Yangtze Block and the Cathaysia Blocks indicates that the Shaoxing-Jiangshan-Pingxiang Fault (SJPF) is the tectonic boundary between the Yangtze and Cathaysia and the Zhenghe-Dapu Fault (ZDF) is the tectonic boundary between the west and east Cathaysia. (3) The middle crust exhibits a low P-wave velocity layer of 6.2 km/s below the Wuyishan Metallogenic Belt (WMB). This low velocity layer can be attributed to the delamination during the Caledonian orogeny and the Yanshanian extension. (4) The middle-lower crust shows a clear lateral velocity variation from west to east in Cathaysia. The subduction of the Paleo-Pacific plate is believed to be the main reason for the extensional tectonic environment and magmatism during the Yanshanian (Jurassic-Cretaceous) period, leading to significant crustal and lithospheric thinning. Relatively high velocity in the middle-lower crust and widely disseminated Cretaceous volcanic rocks in East Cathaysia may be related to the slab rollback of the Paleo-Pacific plate in the late Yanshanian (Cretaceous) period. |
| WOS关键词 | FINITE-DIFFERENCE CALCULATION ; MANTLE STRUCTURE BENEATH ; SOUTH CHINA ; SOUTHEASTERN CHINA ; TECTONIC EVOLUTION ; LITHOSPHERIC THICKNESS ; PETROGENESIS ; DESTRUCTION ; TOMOGRAPHY ; SUBDUCTION |
| 资助项目 | National Key Research and Development Project of China[2016YFC0600201] ; National Key Research and Development Project of China[2018YFC1503204] ; National Natural Science Foundation of China[41790461] ; National Natural Science Foundation of China[41774097] ; National Natural Science Foundation of China[41774100] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000674654200001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; 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/132A11/101964]  |
| 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, Tao; Cai, Huiteng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Zaragoza, Phys Earth, Sci B, Pedro Cerbuna 12, Zaragoza 50009, Spain 3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 6.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China 7.Earthquake Adm Fujian Prov, Fuzhou 350003, Peoples R China 8.China Earthquake Adm, Geophys Explorat Ctr, Zhengzhou 450002, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, Jiyan,Xu, Tao,Cai, Huiteng,et al. Crustal velocity structure of Cathaysia Block from an active-source seismic profile between Wanzai and Hui'an in SE China[J]. TECTONOPHYSICS,2021,811:12. |
| APA | Lin, Jiyan.,Xu, Tao.,Cai, Huiteng.,Lu, Qingtian.,Bai, Zhiming.,...&Jin, Xing.(2021).Crustal velocity structure of Cathaysia Block from an active-source seismic profile between Wanzai and Hui'an in SE China.TECTONOPHYSICS,811,12. |
| MLA | Lin, Jiyan,et al."Crustal velocity structure of Cathaysia Block from an active-source seismic profile between Wanzai and Hui'an in SE China".TECTONOPHYSICS 811(2021):12. |
入库方式： OAI收割
来源：地质与地球物理研究所
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