| 宝兴沟金矿地球物理测井响应特征及找矿标志 |
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| 关键词:Baoxinggou gold deposit well logging lithological response characteristics prospecting signs |
| 基金项目:本文由中国地质调查局项目(编号: DD20242753)资助。 |
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| Response Characteristics and Prospecting Signs of Geophysical Well Logging in the Baoxinggou Gold Deposit |
| As an important Au (Cu-Mo) metallogenic belt in China, the Great Hinggan Mountains region has undergone prolonged mineral development and exploration. The current core scientific challenge in geological prospecting is achieving breakthroughs in locating deep and peripheral concealed ore bodies through innovative exploration technologies. Taking the ZK0706 verification borehole in the Baoxinggou gold deposit as an example, by integrating multi-parameter geophysical logging and in-well geophysical exploration techniques, in combination with digital core recording data of the entire 790 m borehole section, and using histogram and multi-parameter intersection graph techniques, this study quantitatively analyzed the geophysical field response law of the diorite and diorite porphyrite-modified rock zone in the vertical space of 110–790 m and established the lithology identification threshold. The lithological profile of the borehole and the mineralized alteration layer were divided. The results demonstrated that a lithological identification model for diorite-altered rock series can be constructed using a combination of natural gamma, resistivity, magnetic susceptibility, and electrode potential parameters, providing critical geophysical criteria for three-dimensional targeting of concealed ore bodies. Quantitative analysis revealed that pyritization intensity in the Baoxinggou deposit exhibits no significant correlation with resistivity anomalies, whereas the development of silicified fracture zones shows a coupling relationship with resistivity reduction. A ternary anomaly combination of “low-resistivity, moderate-to-high gamma, and multi-peak high electrode potential” was established as a geophysical logging indicator for gold exploration in the Baoxinggou gold deposit. This achievement not only effectively delineates favorable horizons for hosting gold to guide deep and peripheral prospecting but also provides a scientific basis for deploying three-dimensional exploration projects beyond 2000 m depth. |
| DU Haishuang,CHEN Hongpeng,WANG Mengqi,ZHOU Chuanfang,ZHANG Tianen,WAN Juechang.2026.Response Characteristics and Prospecting Signs of Geophysical Well Logging in the Baoxinggou Gold Deposit[J].Acta Geoscientica Sinica,47(4):939-950. |
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