| 贵州烂泥沟金矿三维定量预测 |
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| 关键词:3D geological modeling cube prediction model geological anomaly quantitative prospecting Lannigou gold deposit, Guizhou Province |
| 基金项目:科技部深地资源勘查开采专项“深部成矿地质异常定量预测方法与模型”(编号: 2017YFC0601502) |
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| 摘要: |
| 3D Quantitative Prediction in the Lannigou Gold Deposit, Guizhou Province |
| The Lannigou gold deposit in Guizhou Province is the largest Carlin-type gold deposit so far known in the ‘Golden Triangle Area’ of Guizhou, Guangxi and Yunnan, which has large mineral reserves (more than 126.25 t), reaching a superlarge scale. The deposit is located on the northern side of Youjiang Basin on the southwest margin of Yangtze paraplatform as well as at the northern apex of the triangle structural deformation area composed of Laizishan anticline, Banchang thrust fault and Danheng tectonic belt. The geological settings of mineralization and genetic type of the Lannigou gold deposit were systematically analyzed and then the prospecting model was summarized on such a basis. The 3D geological model was built based on the data foundation, and then the quantitative extraction and 3D spatial reconstruction of geological anomaly ore-controlling information were carried out under the guidance of the prospecting model. A prospecting prediction model was established, and the results were calculated through “cube prediction model”. In order to reduce the uncertainty of the prediction results, the authors combined the results of three-dimensional weight of evidence and the information contents. A total of 5 prospective targets were delineated, which included two Class A targets and three Class B targets. This research provides a reference for further exploration of the study area. |
| ZHANG Quan-ping,CHEN Jian-ping,CHEN Xue-wei,LI Guo-chao,LIU Chang,ZHU Jing.2020.3D Quantitative Prediction in the Lannigou Gold Deposit, Guizhou Province[J].Acta Geoscientica Sinica,41(2):193-206. |
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