Institutional Repository of State Key Laboratory of Lithospheric Evolution
| The fine upper crustal structure below the Qin-Hang and Wuyishan metallogenic belts revealed by double beamforming ambient noise tomography | |
| Hou Jue1,2,3; Xu Tao1,4; Lu QingTian5; Zheng MengJie1,3; Bai ZhiMing1,4 | |
| 2022-10-01 | |
| Source Publication | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| ISSN | 0001-5733 |
| Volume | 65Issue:10Pages:3881-3899 |
| Abstract | 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. |
| Keyword | Qin-Hang Metallogenic Belt Wuyishan Metallogenic Belt Double beamforming Ambient noise tomography S-wave velocity |
| DOI | 10.6038/cjg2022Q0152 |
| WOS Keyword | SE CHINA IMPLICATIONS ; SOUTH CHINA ; CU-AU ; TECTONIC EVOLUTION ; STRUCTURE BENEATH ; SEISMIC NOISE ; PORPHYRY CU ; VELOCITY STRUCTURE ; COPPER-DEPOSIT ; PETROGENESIS |
| Language | 英语 |
| WOS Research Area | Geochemistry & Geophysics |
| WOS Subject | Geochemistry & Geophysics |
| WOS ID | WOS:000865472200016 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iggcas.ac.cn/handle/132A11/107810 |
| Collection | 岩石圈演化国家重点实验室 |
| Corresponding Author | Xu Tao |
| Affiliation | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 5.Chinese Acad Geol Sci, Beijing 100037, Peoples R China |
| First Author Affilication | State Key Laboratory of Lithospheric Evolution |
| Corresponding Author Affilication | State Key Laboratory of Lithospheric Evolution |
| Recommended Citation 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. |
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