气候变化领域集成服务门户(CCPortal): High-resolution crustal structure and gold mineralization in the southwest Cathaysia block revealed by a dense seismic array

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DOI	10.1016/j.tecto.2021.229012
	High-resolution crustal structure and gold mineralization in the southwest Cathaysia block revealed by a dense seismic array
	Li X.; Li Z.; Xi Y.; Shi Y.; Wang X.; Yan P.; Bao F.
发表日期	2021
ISSN	00401951
卷号	816
英文摘要	This study presents new seismic data and interpretations for the deep structure in the southwest Cathaysia block comprised of Yunkai, Yuegui and Yuezhong blocks. A dense seismic array consisting of 112 short-period, three-component seismic stations was deployed to investigate the geodynamic mechanism of the nappe tectonic zone and gold mineralization with 2.5 km spacing across the Luoding-Yunfu region. Based on this dataset, we are able to image the high-resolution crustal structures of the southwest Cathaysia block using the P-wave receiver function method. Our imaging results reveal distinct structural features beneath the study region, including marked lateral variations of Moho discontinuities. Beneath the Luoding-Yunfu nappe tectonic zone, the Moho uplift indicates that its formation is related to deep melt mantle (e.g., Asthenospheric mantle OIB). Moho features depicted by the Ps image are different from those by the PpPs phase along this tectonic zone, which could be ascribed to the local complex structures as illustrated in the forward analysis for different Moho structures. Such a uplift is also observed from the H-κ stacking results and a low average Vp/Vs ratio (~1.65) is found in this region, which could be attributed to its location within a tectonic strain zone. Based on the analysis and comparisons with previous studies, we infer that the crustal uplift in the Luodin-Yunfu area could be a typical scenario of the ore-controlling structure. This study also suggests that upwelling channels of deep melt mantle in the southwest Cathaysia block could facilitate the progress of migration, enrichment and precipitation of gold mineralization. © 2021 Elsevier B.V.
关键词	Crustal structure Dense seismic array Gold mineralization Receiver function Southwest Cathaysia block
英文关键词	Geodynamics; Ore analysis; Seismic waves; Seismology; Tectonics; Complex structure; Crustal structure; Forward analysis; Gold mineralization; Lateral variations; Ore-controlling structures; Receiver function method; Structural feature; Mineralogy
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/208010
作者单位	School of Science, Hunan University of Technology and Business, Changsha, 410205, China; Key Laboratory of Hunan Province for Statistical Learning and Intelligent Computation, Hunan University of Technology and Business, Changsha, 410205, China; Science and Technology on Reliability and Environmental Engineering Laboratory, Beijing Institute of Spacecraft Environment Engineering, Beijing, 100094, China; Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China; Institute of Earthquake Forecasting, China Earthquake Administration, Beijing, 100036, China; State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, China; Courant institute of mathematical sciences, New York University, New York, United States; State Key Laboratory of Geodesy and Earth's Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China
推荐引用方式 GB/T 7714	Li X.,Li Z.,Xi Y.,et al. High-resolution crustal structure and gold mineralization in the southwest Cathaysia block revealed by a dense seismic array[J],2021,816.
APA	Li X..,Li Z..,Xi Y..,Shi Y..,Wang X..,...&Bao F..(2021).High-resolution crustal structure and gold mineralization in the southwest Cathaysia block revealed by a dense seismic array.Tectonophysics,816.
MLA	Li X.,et al."High-resolution crustal structure and gold mineralization in the southwest Cathaysia block revealed by a dense seismic array".Tectonophysics 816(2021).