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| 我国可地浸砂岩型铀矿成矿模式初步探讨 | |
| 引用本文： | 张金带,徐高中,陈安平,王成.我国可地浸砂岩型铀矿成矿模式初步探讨[J].铀矿地质,2005,21(3):139-145. |
| 作者姓名： | 张金带 徐高中 陈安平 王成 |
| 作者单位： | 1. 核工业地质局,北京,100013 2. 核工业203研究所,陕西,咸阳,712000 3. 核工业208大队,内蒙古,包头,014010 4. 核工业216大队,新疆,乌鲁木齐,830011 |
| 摘 要： | 本文通过综合分析伊犁盆地南缘、吐哈盆地西南缘、鄂尔多斯盆地东北部地区等可地浸砂岩型铀矿重点成矿区的成矿环境和主要控制因素, 探讨了我国可地浸砂岩型铀矿的成矿模式, 认为伊犁盆地南缘、吐哈盆地西南缘层间氧化带型铀矿床主要受有利的构造、沉积建造和层间氧化带控制, 具有含矿建造铀预富集、表生后成改造成矿及矿后构造活动进一步叠加富集的特征, 而鄂尔多斯盆地东北部地区的铀矿化主要受古层间氧化带型铀矿化控制, 并遭受二次还原的改造作用, 其矿化规模显得较前者更大。 |
| 关 键 词： | 可地浸砂岩型铀矿 伊犁盆地 吐哈盆地 鄂尔多斯盆地 成矿模式 |
| 文章编号： | 1000-0658(2005)03-0139-07 |
| 修稿时间： | 2005年3月11日 |
Preliminary discussion on uranium metallogenic models of China's in-situ leachable sandstone-type uranium deposits |
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| ZHANG Jin-dai,XU Gao-zhong,CHEN An-ping,WANG Cheng.Preliminary discussion on uranium metallogenic models of China''''s in-situ leachable sandstone-type uranium deposits[J].Uranium Geology,2005,21(3):139-145. | |
| Authors: | ZHANG Jin-dai XU Gao-zhong CHEN An-ping WANG Cheng |
| Institution: | ZHANG Jin-dai 1,XU Gao-zhong 2,CHEN An-ping 3,WANG Cheng 4 |
| Abstract: | By comprehensively analyzing metallogenic environments and main ore-controlling factors of important uranium metallogenic regions of in-situ leachable sandstone-type uranium deposits at the southern margin of Yili basin,at the south-western margin of Turpan-Hami basin and in the northeastern Ordos basin,authors of this paper discuss the metallogenic models of China's in-situ leachable sandstone-type uranium deposits,and suggest that the interlayer oxidation zone type uranium deposits in Yili and Turpan-Hami basins are basically controlled by favourable structures,sedimentary formations and interlayer oxidation zone,and are characterized by multistage uranium concentration,namely the uranium pre-concentration of ore-hosting sedimentary formation,the uranium ore-formation in the stage of supergenic epigenetic reworking,and the further superimposition enrichment of post-ore tectonic activity.However,the interlayer oxidation zone type uranium deposit in the northeastern Ordos was formed after the formetion of the secondary reduction. So, paleo-interlayer oxidation zone type uranium mineralization has the mineralization size much greater than the former two. |
| Keywords: | in-situ leachable sandstone-type uranium deposit Yili Basin Turpan-Hami basin Ordos basin metallogenic model |
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