CSAMT data interpretation by fine processing and constraint inversion in the porphyry copper deposit
HUANG Li-Shan1, HOU Yi-Jun2, YANG Hong3, WANG Jian-Chao1, ZHAO Yi1, ZHANG Li1
1. China Nonferrous Metal (Guilin) Geology and Mining Co., Ltd., Guilin 541004, China;
2. Information Center of Ministry of Land and Resources, Beijing 100812, China;
3. College of Earth Sciences, Guilin University of Technology, Guilin 541004, China
In geophysical data inversion of metallic ore deposits, the automatic inversion of data retrieval models often appears to be inconsistent with the objective of geological phenomena. However, the depth, shape, size, range and other changes in the physical properties of the inversion model with known constraints can restrict the inversion model, so that the inversion of geoelectric model can become more realistic. In this paper, with the application of the controlled source audio magnetotelluric survey (CSAMT) in a porphyry copper deposit of Guangxi as an example, the authors, taking into account the validity of the CSAMT method, the resolution and physical properties of rocks and minerals and the deposit characteristics and other factors, utilized the shallow known orebodies and wall rocks to perform inversion of profiling geoelectric model and made positioning and forecasting of deep orebodies. Drilling verification shows that remarkable ore-prospecting results have been achieved.
黄理善, 侯一俊, 杨红, 王建超, 赵毅, 张力. 斑岩型铜矿床带条件约束的CSAMT数据精细处理和反演解释[J]. 物探与化探, 2015, 39(4): 817-822.
HUANG Li-Shan, HOU Yi-Jun, YANG Hong, WANG Jian-Chao, ZHAO Yi, ZHANG Li. CSAMT data interpretation by fine processing and constraint inversion in the porphyry copper deposit. Geophysical and Geochemical Exploration, 2015, 39(4): 817-822.