华南中生代花岗岩型、火山岩型、外接触带型铀矿找矿思路(Ⅰ)  

Prospecting ideas for Mesozoic granite-type, volcanics-type and exocontact-type uranium deposits in South China(Ⅰ)

作　　者：余达淦[1] 

机构地区：[1]华东地质学院,江西抚州344000

出　　处：《铀矿地质》2001年第5期257-265,共9页Uranium Geology

基　　金：核工业科学基金 (编号 :Y71 96R1 80 2 );核能资源研究开放实验室 (编号 :院开 980 1- 980 5 )

摘　　要：华南中生代铀成矿作用处于中国东部燕山期强烈火山岩浆作用、壳幔作用及流体作用时期 ,铀具有大规模聚集成矿的前景。因此 ,中生代花岗岩型、火山岩型、外接触带型铀矿找矿必须引进深源成矿理论 ,淡化“浅成低温活化成矿理论” ,充分认识铀矿既可形成于浅源浅成条件 ,也能形成于深源深成高温条件及深源浅成中温条件的特点 ,重视早阶段 (1 3 0— 95Ma)铀矿化 ,打破以主岩类型找矿的人为界限 。The Mesozoic uranium ore formation process in South China resulted from the intense volcanic magmatism, the crust mantle interaction and the fluidization in Yanshanian period, and there is great prospect for large scale uranium concentration and ore formation. Therefore, during the prospecting for Mesozoic granite type, volcanics type and exocontact type uranium deposits it is necessary to introduce deep source metallogenic theory, to "desalt" metallogenic theory of epithermal activation, to fully realize that uranium deposits may be formed not only at shallow depth, but also in conditions of deep source, great depth and high temperature, as well as in environments of deep source, shallow depth and median temperature, to give emphasis to the early stage(130-95Ma) uranium mineralization, to break the man made boundary in prospecting for uranium only based on host rock type, to strengthen the research on Cretaceous magmatic system.

关 键 词：铀成矿作用 岩浆体系 找矿思路 花岩岩型铀矿床 中生代 火山岩型铀矿床 

分 类 号：P619.14[天文地球—矿床学]