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TAO Long, ZHANG Shasha, LAN Xueyi, TANG Zhengjiang, AN Ming, YAN Jiayong, WANG Yunyun, GUO Dong, YE Lin, HONG Dajun. 2019. Application of 1: 50000 gravity and magnetic exploration for mineral prospect in heavily covered area in Xuancheng, Anhui Province[J]. Geology in China, 46(4): 894-905. doi: 10.12029/gc20190418
Citation: TAO Long, ZHANG Shasha, LAN Xueyi, TANG Zhengjiang, AN Ming, YAN Jiayong, WANG Yunyun, GUO Dong, YE Lin, HONG Dajun. 2019. Application of 1: 50000 gravity and magnetic exploration for mineral prospect in heavily covered area in Xuancheng, Anhui Province[J]. Geology in China, 46(4): 894-905. doi: 10.12029/gc20190418
shu

Application of 1: 50000 gravity and magnetic exploration for mineral prospect in heavily covered area in Xuancheng, Anhui Province

  • 1.

    Geological Exploration Technology Institute of Anhui Province, Hefei 230031, Anhui, China

  • 2.

    Sinoprobe Center, Chinese Academy of Geological Sciences and China Geological Survey, Beijing 100037, China

    • Fund Project: Supported by China Feology Survey project(No.121201112092, No.1212011121009, No.DD20160082), National Natural Science Foundation(No.41574133, No.41630320)and National Key R & D Program of China(No.2016YFC0600201)
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  • Author Bio: TAO long, male, born in 1984, senior engineer, mainly engages in geophysical exploration; E-mail:taolong001122@163.com
Received Date:  21 June 2019
Revised Date:  18 July 2019
Publish Date:  25 August 2019
    Abstract

  • Xuancheng area in Anhui Province is an important part of the metallogenic belt in the middle and lower reaches of the Yangtze River, with the surface characterized by Quaternary coverage, red bed coverage and nappe structure. Based on the newly acquired 1:50, 000 high-precision gravity and magnetic data, the plane properties of the geological structure, ore-control horizon, and intrusive rock mass are obtained through the plane interpretation to the study area. Based on the magnetic second-degree and half-dimensional quantitative inversion results, we explored the three-dimensional structure of the whole area, and obtained the geometric spatial distribution rules of the main ore-controlling faults, magmatic rocks, and ore source layers. Also, we studied the spatial attributes of the favorable parts of metallogenesis. Starting from the known typical deposits in the study area, we summarized the mineralization factors of the geophysical characteristics, metallogenic conditions, and ore-controlling factors. We also explored the geological-geophysical prospecting model of the target area, divided the prospecting mineralization areas, and delineated the key prospecting target areas. The drilling to cores of Weidun target area in Zhuqiao Metallogenic Prospecting Area shows that, by processing the 1:50000 high-precision gravity and magnetic data, we implemented a way, including the potential field plane-threedimensional exploration and geological-geophysical prospecting model construction, in mineral exploration, which taked advantage of the geophysical prospecting and finally improved the exploration effect. The results in this study can provide references for prospecting and exploration works in eastern China.

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