Application of comprehensive electromagnetic study in deep mineralization mechanism -A case study of the Wuxi polymetallic ore deposit, south Anhui

doi:10.6038/cjg20161132

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院页岩气与地质工程重点实验室

	Application of comprehensive electromagnetic study in deep mineralization mechanism -A case study of the Wuxi polymetallic ore deposit, south Anhui
	Lin Fang-Li 1,2; Wang Guang-Jie 1; Yang Xiao-Yong 3
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2016-11-01
卷号	59 期号:11 页码:4323-4337
关键词	Metallogenic Mechanism Integrated Approach of Electric Magnetic Method Wuxi Polymetallic Ore Porphyry
DOI	10.6038/cjg20161132
文献子类	Article
英文摘要	The Wuxi polymetallic ore deposit which lies between the middle and lower reaches of the Yangtze River polymetallic metallogenic belt and South China metallogenic belt, is a new prospecting area in the Jiangnan orogen. This article is trying to study the mineralization mechanism in the deep subsurface of this area with the effective electromagnetic integrated exploration. For a new prospecting area, the collection of regional geological and geophysical background is very important. Geological data in this area is collected, which permits to analyze the regional metallogenic background. The physical property of the main rock types exposed in this area is measured in the laboratory. On the basis of these results three electromagnetic field measurements are carried out. By the measurements of three kinds of geophysical methods: ground precise magnetic survey, induced polarization and controlled source audio magnetotelluric method (CSAMT), the distribution characteristics of magnetic susceptibility, polarization and resistivity are studied, to bound mineralization possibilities and possible ore body position and depth range together. Based on the results of the geophysical studies, combined with geological and geochemical data, the mineralization dynamics model of the study area is built and then the mineralization mechanism is suggested. Drillings are deployed according to all these results. Drilling results prove the presence of strong alteration, mineralization and porphyry alteration at depth in the study area, which is consistent with the judgment of the CSAMT results. The consistency of drilling and geophysical results fully demonstrate the important role of the integrated electromagnetic method in the discovery and prediction of porphyry type polymetallic deposits. Meanwhile, it confirms the similarity between South China metallogenic belt and the mineralization belt formed by the subduction, thus promoting mineralization geological studies throughout South China.
WOS关键词	ELECTRICAL STRUCTURE ; RIDGE SUBDUCTION ; COPPER-DEPOSITS ; EASTERN CHINA ; YANGTZE-RIVER ; MIDDLE ; BELT ; AREA
WOS研究方向	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000387300200032
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53258]
专题	地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230036, Peoples R China
推荐引用方式 GB/T 7714	Lin Fang-Li,Wang Guang-Jie,Yang Xiao-Yong. Application of comprehensive electromagnetic study in deep mineralization mechanism -A case study of the Wuxi polymetallic ore deposit, south Anhui[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2016,59(11):4323-4337.
APA	Lin Fang-Li,Wang Guang-Jie,&Yang Xiao-Yong.(2016).Application of comprehensive electromagnetic study in deep mineralization mechanism -A case study of the Wuxi polymetallic ore deposit, south Anhui.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,59(11),4323-4337.
MLA	Lin Fang-Li,et al."Application of comprehensive electromagnetic study in deep mineralization mechanism -A case study of the Wuxi polymetallic ore deposit, south Anhui".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 59.11(2016):4323-4337.