The fine upper crustal structure below the Qin-Hang and Wuyishan metallogenic belts revealed by double beamforming ambient noise tomography
文献类型：期刊论文
| 作者 | Hou Jue2,3,4; Xu Tao2,5; Lu QingTian1; Zheng MengJie2,4; Bai ZhiMing2,5 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 65期号:10页码:3881-3899 |
| ISSN号 | 0001-5733 |
| 关键词 | Qin-Hang Metallogenic Belt Wuyishan Metallogenic Belt Double beamforming Ambient noise tomography S-wave velocity |
| DOI | 10.6038/cjg2022Q0152 |
| 英文摘要 | The South China region, as one of the significant Wu-Sn polymetallic metallogenic provinces in the world, is the most representative area in Mesozoic mineralization in eastern China. However, there are some differences in type and origin of the mineral deposits among the major metallogenic belts in this province. To better understand the regional metallogenic setting and determine the factors controlling the metallogenic differences, using the seismic ambient noise data recorded by "Wanzai-Yongchun" joint active- and passive-sourced seismic experiment, we performed the double beamforming ambient noise tomography and resolved the S-wave velocity model beneath the survey profile. Combined the available results, we draw the following conclusions: (1) The upper crustal S-wave model maps the known faults with different types and depth extent based on different seismic velocity features. The Jiangshan-Shaoxing Fault in the Qin-Hang belt, with the nature of reverse thrust, dipping north-west and running through the crust, had controlled the porphyry magma system in Mesozoic. The strike-slip faults in the Wuyishan belt, almost running through the upper crust with a dip angle, as well as with the neighboring listric faults, have controlled the occurrence and development of the strike slip pull apart basins and volcano graben basins. (2) There are strong lateral S-wave velocity variations across the survey profile, and the bulk S-wave velocity in the Wuyishan belt is slightly higher than that of the Qin-Hang belt, reflecting that the upper crustal compositional structure in the Qin-Hang belt is mainly crust-source granites and acid volcanic rocks, whereas the Wuyishan belt is composed of huge thick Proterozoic metamorphic volcanic-sedimentary rocks. (3) Comprehensive analysis confirms that the differences in middle-lower crustal compositional structure are the essential factors contributing the different types and origin of the mineral deposits between the Qin-Hang and Wuyishan metallogenic belts. Although the shallow bulk S-wave velocity in the Wuyishan belt is slightly higher than that of the Qin-Hang belt, the high-velocity anomalies exist significantly in the lower crust in the Qin-Hang belt, which implies that its lower crust possesses more mafic components ; the lower crust of the Wuyishan belt exhibits a relatively low seismic velocity, which reflects the nature of paleo-felsic ancient crust. |
| WOS关键词 | SE CHINA IMPLICATIONS ; SOUTH CHINA ; CU-AU ; TECTONIC EVOLUTION ; STRUCTURE BENEATH ; SEISMIC NOISE ; PORPHYRY CU ; VELOCITY STRUCTURE ; COPPER-DEPOSIT ; PETROGENESIS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000865472200016 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/107810]  |
| 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 |
| 作者单位 | 1.Chinese Acad Geol Sci, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hou Jue,Xu Tao,Lu QingTian,et al. The fine upper crustal structure below the Qin-Hang and Wuyishan metallogenic belts revealed by double beamforming ambient noise tomography[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2022,65(10):3881-3899. |
| APA | Hou Jue,Xu Tao,Lu QingTian,Zheng MengJie,&Bai ZhiMing.(2022).The fine upper crustal structure below the Qin-Hang and Wuyishan metallogenic belts revealed by double beamforming ambient noise tomography.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,65(10),3881-3899. |
| MLA | Hou Jue,et al."The fine upper crustal structure below the Qin-Hang and Wuyishan metallogenic belts revealed by double beamforming ambient noise tomography".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 65.10(2022):3881-3899. |
入库方式： OAI收割
来源：地质与地球物理研究所
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