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DOI10.1016/j.pepi.2023.107110
Shear wave velocity structure of the upper crust in north Xiaojiang fault zone in SE Tibet via short-period ambient noise dense seismic array
Chen, Si; Gao, Rui; Lu, Zhanwu; Liang, Yao; Cai, Wei; Cao, Lifu; Chen, Zilong; Wang, Guangwen
发表日期2023
ISSN0031-9201
EISSN1872-7395
卷号344
英文摘要The Xiaojiang Fault Zone (XJF) is an important boundary fault on the southeast border of the Tibetan Plateau, with a complex subterranean structure and strong tectonic activity. In the present study, 252 seismograph stations were deployed in the northern section of the XJF to collect ambient noise data in a span of 35 days. The minimum resolution attained was 2 km x 2 km to develop a high-precision underground velocity structure model. The velocity model helped in revealing that the low-velocity distribution originated below the XJF. It was also found that the fault, which is the primary channel for magma to rise, might be the cause of the upper crustal deformation of the XJF. The Dongchuan mining area is located to the west of the XJF, which has a low-velocity structure. However, the high-velocity structure appeared on both sides of the ore body. It is speculated that the ore was formed by magma intrusion. The intrusion serves as a heat source for the mining area and promotes deposit formation.
关键词Xiaojiang fault zoneAmbient noise tomographyDense seismic array
英文关键词LARGE IGNEOUS PROVINCE; PB-ZN DEPOSIT; SOUTHEASTERN FRONT; 2-STATION ANALYSIS; SOUTHWEST CHINA; TOMOGRAPHY; SICHUAN; DISPERSION; PLATEAU; YUNNAN
WOS研究方向Geochemistry & Geophysics
WOS记录号WOS:001100011200001
来源期刊PHYSICS OF THE EARTH AND PLANETARY INTERIORS
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/283558
作者单位China Geological Survey; Institute of Geology, Chinese Academy of Geological Sciences; Chinese Academy of Geological Sciences; Sun Yat Sen University
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Chen, Si,Gao, Rui,Lu, Zhanwu,et al. Shear wave velocity structure of the upper crust in north Xiaojiang fault zone in SE Tibet via short-period ambient noise dense seismic array[J],2023,344.
APA Chen, Si.,Gao, Rui.,Lu, Zhanwu.,Liang, Yao.,Cai, Wei.,...&Wang, Guangwen.(2023).Shear wave velocity structure of the upper crust in north Xiaojiang fault zone in SE Tibet via short-period ambient noise dense seismic array.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,344.
MLA Chen, Si,et al."Shear wave velocity structure of the upper crust in north Xiaojiang fault zone in SE Tibet via short-period ambient noise dense seismic array".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 344(2023).
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