A study of the distribution of granite detected by gravity and magnetic data in Yinkeng Demonstration Area of Nanling Yudu-Ganxian ore concentration area
1. Gravity & Magnetic Institute of Chang’an University,Xi’an 710054,China; 2. College of Geology Engineering and Geomatics,Chang’an University,Xi’an 710054,China; 3. Key Laboratory of Western China’s Mineral Resources and Geological Engineering,Ministry of Education,Chang’an University,Xi’an 710054,China; 4. Geophysical and Geochemical Exploration Institute of Shanxi Province,Yuncheng 044004,China
Located in Yinkeng Town, Yududu-Ganxian ore concentration area, east Nanling Mountains, Southeast China, the Yinkeng Demonstration Area has a good prospect of mineralization, where the granite is closely related to mineralization. Therefore, systematic exploration of granite distribution is one of the key problems in deep prospecting. In this paper, the spatial distribution characteristics of regional granite were comprehensively studied by using gravity and magnetic data, combined with physical, geological, electrical and seismic data. Firstly, the planar distribution of six granite masses in this area was studied and deduced, among which Jiangbei rock mass, Changtan rock mass and Gaoshanjiao rock mass are partially concealed, whereas Liumukeng rock mass and the shallow and deep rock masses of Ge’aowei are completely concealed. It is concluded that the rock mass mainly trends in NE and NNE direction. Then, four gravity (or gravity and magnetic) profiles in the study area were used to invert the spatial distribution of granite, which further revealed the spatial distribution characteristics of the above six rock masses. The inferences are consistent with those obtained by plane gravity and magnetic method as well as the results derived from electrical method and seismic profile interpretation.
刘金兰, 赵斌, 王万银, 李建国, 周新鹏, 王云鹏. 南岭于都—赣县矿集区银坑示范区重磁资料探测花岗岩分布研究[J]. 物探与化探, 2019, 43(2): 223-233.
Jin-Lan LIU, Bin ZHAO, Wan-Yin WANG, Jian-Guo LI, Xin-Peng ZHOU, Yun-Peng WANG. A study of the distribution of granite detected by gravity and magnetic data in Yinkeng Demonstration Area of Nanling Yudu-Ganxian ore concentration area. Geophysical and Geochemical Exploration, 2019, 43(2): 223-233.
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