十红滩地浸砂岩型铀矿床含矿主岩基本特征及与铀成矿的关系

摘要

文章详细论述了十红滩铀矿床含矿主岩中侏罗统西山窑组的沉积学、岩石学和岩石地球化学基本特征,分析了含矿主岩与铀矿床形成的关系；指出该矿床的形成主要是在含矿主岩形成后,缓慢掀斜抬升的准平原化过程中,伴随干热气候条件下的强烈氧化后生蚀变作用,由西山窑组自身的沉积学、岩石学和岩石地球化学特征所决定的.%Basic feature of sedimentology and petrology and lithogeochemistry of Middle Jurassic Xishan-yao formation were discussed for Shihongtan uranium deposit in the paper. The relation between host rock and ore formation was analysed. It is indicated that the formation of Shihongtan uranium deposit de-ponds on the following host rock features in sedimentology, petrology, lithogeochemistry and the intense oxidized epigenetic alteration under hot dry climate condition duering the formation of peneplain caused by the slow tilting uplift.