气候变化领域集成服务门户(CCPortal): Imaging the shallow crustal velocity structure of the Qingchengzi ore field on the Liaodong Peninsula, China, with a short-period dense array using ambient noise tomography

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DOI	10.1016/j.tecto.2021.228913
	Imaging the shallow crustal velocity structure of the Qingchengzi ore field on the Liaodong Peninsula, China, with a short-period dense array using ambient noise tomography
	Xie T.; Xu T.; Ai Y.; Zeng Q.; Zhang W.; Zheng F.
发表日期	2021
ISSN	00401951
卷号	813
英文摘要	The Qingchengzi ore field, which is located in the middle of the Liaodong Peninsula, has a large number of Au, Ag, and Pb-Zn deposits owing to Mesozoic tectonic and magmatic-hydrothermal activities. To reveal the relationship between shallow crustal velocity and gold mineralization and provide constraints on deep ore prospecting (> 1.5 km), ambient noise tomography consisting of an experimental short-period dense array with 334 seismographs surrounding the study region, is adopted. Shallow crustal velocities at depths less than 5.0 km are obtained by a direct inversion method of Rayleigh wave phase velocity dispersion at a period of 0.5–3.0 s. We obtain the following results. (1) The Jianshanzi fault (JSZF) is well imaged at a depth of 5.0 km. Because ore-forming fluids and materials originated from adjacent concealed granite intrusions characterized by low-velocity anomalies, we infer that the JSZF contributed to mineralization. (2) The Baiyun gold alteration belt in the northern ore field has a high velocity and cuts through the surrounding low-velocity area, extending downward to approximately 0.9 km. This high-velocity belt may be a superposition of the marble of the Dashiqiao Formation and mineralization-alteration, which suggests that the depth of the belt may be of favorable prospecting potential. (3) Based on the obvious low-velocity intrusive anomalies beneath the southern Xiaotongjiapuzi gold belt, we deduce that the mineralization of the Xiaotongjiapuzi gold belt is controlled by unexposed granite intrusions and thus has high mineralization potential at great depths. (4) A geologically reasonable model of the distribution of possible concealed granite intrusions related to deep mineralization and two prospective mineralization areas is presented. © 2021 Elsevier B.V.
关键词	Ambient noise tomography Gold mineralization Qingchengzi ore field Shallow crustal velocity structure Short-period dense array
英文关键词	Acoustic noise; Binary alloys; Gold alloys; Gold deposits; Granite; Lead alloys; Lead zinc deposits; Mineralogy; Silver alloys; Tomography; Velocity; Zinc alloys; Ambient noise tomographies; Crustal velocity structure; Direct inversion methods; Gold mineralization; Hydrothermal activity; Low-velocity anomaly; Mineralization potential; Rayleigh-wave phase velocity; Ores; ambient noise; crustal evolution; gold; hydrothermal activity; mineralization; ore deposit; tomography; velocity structure; China; Liaodong Peninsula; Liaoning
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/208092
作者单位	State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing, 100029, China; Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China; Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China; Southern University of Science and Technology, Shenzhen, 518055, China
推荐引用方式 GB/T 7714	Xie T.,Xu T.,Ai Y.,et al. Imaging the shallow crustal velocity structure of the Qingchengzi ore field on the Liaodong Peninsula, China, with a short-period dense array using ambient noise tomography[J],2021,813.
APA	Xie T.,Xu T.,Ai Y.,Zeng Q.,Zhang W.,&Zheng F..(2021).Imaging the shallow crustal velocity structure of the Qingchengzi ore field on the Liaodong Peninsula, China, with a short-period dense array using ambient noise tomography.Tectonophysics,813.
MLA	Xie T.,et al."Imaging the shallow crustal velocity structure of the Qingchengzi ore field on the Liaodong Peninsula, China, with a short-period dense array using ambient noise tomography".Tectonophysics 813(2021).