辽东小佟家堡子金矿床地球物理测井响应特征及找矿标志

作者：Dongming Liu, Mingxing Liang, Jie Feng, Yang Ou, Yi Yang, Jinghong Zhai, Zhenzhou Lin, Wenli Gao · 发表于：Earth Science-Journal of China University of Geosciences · 年份：2024 · DOI：10.3799/dqkx.2022.185 · 研究领域：earthquake and tectonic studies、Geological and Geochemical Analysis、High-pressure geophysics and materials

第 3 期 刘东明等： 辽东小佟家堡子金矿床地球物理测井响应特征及找矿标志 breakthrough in deep prospecting here.Geophysical method is the main technical means to discover and detect deep gold deposits.In order to finely characterize the stratigraphic structure of Qingchengzi ore concentration area, accurately reveal the geophysical anomalous characteristics of deep mineralized alteration zone, and establish the geophysical interpretation scale for deep prospecting, multi-parameter geophysical logging and borehole geophysical survey were carried out in ZK12-11 hole in Xiaotongjiabuzi gold mining area.Combined with drill core logging, the response characteristics of lithology and mineralized alteration zone of 300-990 m well section of the hole were analyzed by histogram and crossplot, and the drilling lithology profile and mineralized alteration layer were divided.The results show that the four parameters of natural gamma, apparent resistivity, magnetic susceptibility and polarizability can distinguish the main lithology of borehole, and can be used as the main basis for reconstructing the lithology profile of borehole.The content of pyrite in the pyritization layer is not high enough to cause the decrease of formation resistivity.Graphitization is the main factor causing the decrease of resistivity.The natural gamma high-low transition zone and the low resistivity and high polarization non-magnetic anomaly zone are the prospecting signs of geophysical logging for gold prospecting in Xiaotongjiabuzi gold deposit...