Crustal composition of the eastern South China Block based on the seismological study
文献类型：期刊论文
| 作者 | Tan YuJuan4; Duan YongHong4; Lin JiYan2,3,4; Li Wei3; Wang GaoChun2,3; Li XueMin4; Wang GuoFa4; Zou ChangQiao1; Zhao YanNa4; Zhou Ming4 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2021-09-01 |
| 卷号 | 64期号:9页码:3125-3138 |
| ISSN号 | 0001-5733 |
| 关键词 | Eastern South China Block Crustal composition wt% SiO2 Joint inversion |
| DOI | 10.6038/cjg2021P0089 |
| 英文摘要 | In the late Mesozoic, extensive igneous activities occurred in the eastern South China Block (ESCB), which might change the crustal composition. The SiO2 contents of the crust is an essential feature of its properties. Based on the data from the broadband seismic array and permanent stations deployed in the ESCB, we use ambient noise tomography to obtain high-resolution surface wave dispersions, and then we apply joint inversion of surface wave dispersions and receiver functions to construct the crustal S-wave velocity structure. Finally, based on the crustal average S-wave velocity and V-P/V-S ratio, we further estimate the spatial distribution of crustal SiO2 contents referring to the petrophysical experiment data. The results show high lower crustal S-wave velocity (greater than 3.9 km.s(-1)), relatively high V-P/V-S ratio (greater than 1. 77), and intermediate composition with SiO2 contents of 60 similar to 65 wt% in the southeast coastal region at where extensive alkaline igneous rocks emplaced. In contrast, the Wuyi orogenic belt and Jiangnan orogenic belt have relatively low S-wave velocity (lower than 3.8 km.s relatively high V-P/V-S ratio (lower than 1.75), and contains relatively felsic composition with SiO2 contents of 65 similar to 70 wt%. The diverse crustal components across the Zhenghe-Dapu fault, as intermediate-mafic to the east while felsic to the west, indicate that the subduction of the paleo-Pacific plate has caused thermal erosion process beneath the ESCB, and the crust-mantle metasomatism is mainly limited to the east of the Zhenghe-Dapu fault. |
| WOS关键词 | SURFACE-WAVE DISPERSION ; UPPER-MANTLE STRUCTURE ; AMBIENT SEISMIC NOISE ; VELOCITY STRUCTURE ; RECEIVER FUNCTIONS ; STRUCTURE BENEATH ; CATHAYSIA BLOCK ; LITHOSPHERIC STRUCTURE ; 2-STATION ANALYSIS ; ARRAY TOMOGRAPHY |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000693048100010 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102677]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Duan YongHong |
| 作者单位 | 1.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 4.China Earthquake Adm, Geophys Explorat Ctr, Zhengzhou 450002, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tan YuJuan,Duan YongHong,Lin JiYan,et al. Crustal composition of the eastern South China Block based on the seismological study[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2021,64(9):3125-3138. |
| APA | Tan YuJuan.,Duan YongHong.,Lin JiYan.,Li Wei.,Wang GaoChun.,...&Zhou Ming.(2021).Crustal composition of the eastern South China Block based on the seismological study.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,64(9),3125-3138. |
| MLA | Tan YuJuan,et al."Crustal composition of the eastern South China Block based on the seismological study".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 64.9(2021):3125-3138. |
入库方式： OAI收割
来源：地质与地球物理研究所
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