网络出版日期: 2024-07-03
基金资助
国家自然科学基金项目“我国西南（贵州）喀斯特地区特色矿产成矿理论及综合利用”(U1812402);国家重点研发计划“深地资源勘查开采”重点专项“深部矿产资源三维找矿预测评价示范”(2017YFC0601500);贵州省科技计划项目“贵州省卡林型金矿成矿与找矿科技创新人才团队建设”（编号：黔科合平台人才-CXTD［2021］007）和贵州省地质勘查资金项目“黔西南金矿多层次构造滑脱成矿系统研究与找矿预测”(520000214TLCOG7DGTNRG)
Geological Characteristics and Prospecting Prediction of Gold Deposit in Kawu Area，Zhenfeng County，Guizhou Province
Online published: 2024-07-03
为进一步识别卡务地区金矿新的找矿标志，开展了找矿预测工作。首先，通过对卡务地区进行野外地质调查，开展研究区地质背景和典型矿床地质特征的深入研究，新识别出区内岩石能干性差异大的岩层界面之间存在构造蚀变体（SBT），且金矿体主要赋存于SBT和背斜近轴部的高角度逆断层及层间破碎带中；然后，通过系统总结卡务地区金矿成矿要素，发现其成矿地质特征与新寨金矿基本一致，认为卡务地区金矿与区域卡林型金矿属于同一成矿系统；最后，基于黔西南金矿多层次构造滑脱成矿系统和找矿预测模型，开展了找矿预测，圈定找矿预测区3个，预测卡务地区潜在金资源量为50 t。
王大福, 刘建中, 王泽鹏, 陈发恩, 杨成富, 徐良易, 李俊海, 刘婧珂, 潘启权, 龙成雄, 汪小勇 . 贵州贞丰县卡务地区金矿地质特征与找矿预测[J]. 黄金科学技术, 2023 , 31(3) : 433 -442 . DOI: 10.11872/j.issn.1005-2518.2023.03.151
The tectonic position of the study area belongs to the junction of the southwest edge of the Yangtze quasi platform and the Youjiang fold belt of the south China fold belt，which is an important component of carlin-type gold deposits area in southwest Guizhou.The deep hidden deposit prospecting has not made a new breakthrough.Based on the recent research on structure-controlled alteration zone （SBT） and the latest theoretical results of multi-level structural slippage metallogenic system of carlin-type gold deposits in Nanpanjiang-Youjiang area，the geological background and geological characteristics of typical deposits are studied through field investigation in the Kawu，Southwestern Guizhou，China.The results further clarified the geological characteristics of gold deposits in the Kawu area and identified the main prospecting criteria，established the core elements of gold prospecting prediction in the Kawu area，and newly identified the existence of SBT between the rock interfaces with large differences in rock competence in the area，providing an important basis for regional prospecting prediction.The gold orebody is deposited in SBT and the high-angle pressure fault and the interlayer fracture zone，system summary Kawu area gold metallogenic elements.The study shows that the regional structural detachment and interlayer fracture zone are the main channel of metallogenic fluid migration and the ore site of gold ore body，the abnormal overlap parts of the metallogenic elements such as Au，As，Sb and Hg are the most favorable parts of mineralization，which is the same metallogenic system as the regional carlin-type gold deposit，and the gold metallogenic conditions are superior.Based on the multi-level structural detachment metallogenic system and the prospecting prediction model，the prospecting prediction was carried out，3 prospecting prediction areas were delineated，the gold resources in Kawu area were predicted as 50 t，and the prospecting direction in the area is defined，so as to provide guidance and reference for the subsequent prospecting work in this area.
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