| 华南花岗岩型铀矿成矿作用及成矿预测 |
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| 关键词:metallogenic process metallogenic model metallogenic prediction granite-related uranium deposits South China |
| 基金项目:中核集团集中研发项目(编号: 地LTD1602);中国核工业地质局科研项目(编号: 202138-10; 202238-10) |
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| 摘要: |
| Metallogenic Process and Prediction of Granite-related Uranium Deposits in South China |
| South China hosts numerous granite-related uranium deposits. Based on the comprehensive study on the regional geological background, metallogenic characteristics, uranium metallogenic mechanism and ore-controlling factors of different types of granite-related uranium deposits in South China, it is concluded that the metallogenic processes of these uranium deposits have many similarities. Uranium mineralization is characterized by multiple stages. Uranium is mainly derived from uranium-rich basements and granitoids, and the ore fluids have crust-derived and mantle-derived components. Both deep mantle-derived fluids and meteoric water play important roles in the formation of granite-related uranium deposits controlled by Mesozoic–Cenozoic lithospheric extension. The fault is the most critical ore-controlling factor. Therefore, the regional uranium metallogenic models and prediction models in South China were established. Four uranium metallogenic prospective areas were predicted. Based on the GOCAD software, deep uranium metallogenic potential were predicted, and the three-dimensional geological models were established of Shulouqiu, Lujing and Shazijiang deposits. The positioning, quantifying, classifying, and depth-determining prediction of uranium resources were realized, which provides suggestions for the further deployment of uranium ore exploration work in South China. |
| FAN Hong-hai,PANG Ya-qing,HE De-bao,CHEN Dong-huan,WANG Yong-jian,SUN Yuan-qiang,GENG Rui-rui.2023.Metallogenic Process and Prediction of Granite-related Uranium Deposits in South China[J].Acta Geoscientica Sinica,44(5):887-896. |
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