铀矿地质

在总结前人大量研究成果的基础上,笔者尝试对我国的热液铀矿成矿理论体系作一简要概括。在成矿的"源-运-导-集-存"基本规律问题上,此体系大体包含以下10个方面:(1)硅化带成矿类型;(2)矿-岩时差;(3)碱交代作用;(4)成矿壳层;(5)4种铀矿类型(花岗岩型、火山岩型、碳硅泥岩型、砂岩型)统一构造-热液成矿;(6)铀成矿预富集序列;(7)花岗岩岩浆演化链的解耦;(8)绢英岩化高温富矿类型;(9)玄武岩事件;(10)幔汁成岩成矿论。

Based on summarizing the mass of research outcome of the predecessors,the author attempts to make a brief generalization on the theory system of hydrothermal uranium mineralization in China.The system of uranium metalization is founded in the basic way of uranium source-migration-transportation-richment-reservation.The system mainly consists of the following frames:(1) mineralization type of silification zone;(2) age gap of mineralization to host rock;(3)alkli metasomatism;(4) metallogenic layer of crust;(5)integratation of 4 types mineralization(granite,volcanics,carbonaceous-siliceous-argilaceous rock and sandstone) in tectonic-hydrothermal process;(6) pre-enrichment process of metallization;(7) decouplement of granite magma evolution;(8) types of rich ore by high tempreture sericitization;(9)basalt event;(10) rock and ore formation by HARCON.