| 中国铀地球化学块体与远景区划分 |
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| 关键词:uranium geochemical block prospective area |
| 基金项目:国家重点研发计划项目第九课题(编号: 2016YFC0600609);中国地质调查局地质调查项目“化学地球基准与调查评价” (编号: DD20190450) |
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| China’s Uranium Geochemical Blocks: Implications for Delineation of Uranium Prospective Areas |
| In this study, the authors collected geochemical data from stream sediment surveys of different scales and calculated the data based on a grid of 10 km by 10 km at the scale of 1:1 million in China. The statistic data show that geochemical background values are different in North China and South China separated by the boundary line of Qinling–Dabie mountains. Midian values of uranium in whole China, South and North China are 2.3 μg/g, 2.9 μg/g and 2.1 μg/g respectively. A total of 79 geochemical blocks with an area more than 1000 km2 were delineated by a threshold value of 4.8 μg/g for South China and 3.0 μg/g for North China based on cumulative frequency of 85%. Among the 79 geochemical blocks, 33 uranium prospective areas were delineated for four types of major uranium deposits in combination with the data of uranium metallogeny and geology obtained by other researchers. |
| XU Shan-fa,WANG Xue-qiu,ZHANG Bi-min,WANG Wei,CHI Qing-hua,ZHOU Jian,YAN Tao-tao.2020.China’s Uranium Geochemical Blocks: Implications for Delineation of Uranium Prospective Areas[J].Acta Geoscientica Sinica,41(6):785-796. |
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