The interpretation of surface and borehole magnetic data in the Ganzhong iron deposit, Jiangxi
WANG Sai-Xin1,2, YAN Ting-Jie1,2, ZHOU Dong-Liang3
1. Development and Research Center of China Geological Survey, Beijing 100037, China;
2. Technical Guidance Center for Mineral Resources of Ministry of Land and Resources, Beijing 100120, China;
3. Ganxi Geological Survey Party, Jiangxi Bureau of Geology and Mineral Resources, Nanchang 330201, China
Located in Xinyu City, Jiangxi Province, the Ganzhong iron deposit is a sedimentary metamorphic iron deposit. As the country rock in this area is non-magnetic, we have the base of physical properties to implement magnetic survey. The iron formation is thin and deep in this area. So far, the interpretation of the magnetic data has not achieved good results. The previous work was mainly focused on the geological exploration and drilling. In this paper, the authors first studied the status of the geological work in the study area, and then used the wavelet multi-scale decomposition method to extract the deep field anomaly. The method of tilt-angle and the Theta Map was also employed to identify the boundary of the iron formation and, as a result, five prospecting areas were delineated which have good metallogenic potential. In addition, the authors applied meticulous inversion and interpretation along No. 62 exploration line of Songshan area based on the borehole data of ZK6209 and provided a quantitative interpretation result. It is pointed out that three-component borehole magnetic survey is an effective way to find the deep iron formation. This paper provides some new ideas for the deep and peripheral prospecting in the Ganzhong iron deposit.
王赛昕, 颜廷杰, 周栋良. 赣中新余式铁矿地面和井中磁测资料综合处理解释[J]. 物探与化探, 2015, 39(3): 478-484.
WANG Sai-Xin, YAN Ting-Jie, ZHOU Dong-Liang. The interpretation of surface and borehole magnetic data in the Ganzhong iron deposit, Jiangxi. Geophysical and Geochemical Exploration, 2015, 39(3): 478-484.
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