摘要
笔者认为 ,对华南中生代富大铀矿成矿背景的研究要强调壳幔交换的深部作用 ,强调构造体制变革对成矿的制约 ,以及两条火山岩带和一个岩浆活动区的成矿地位。构造研究中要引进伸展构造理论 ,研究盆岭构造、热隆构造及与变质核杂岩构造配套的常见构造型式 ,研究盆岭耦合特点。成矿模式要考虑岩浆定位部位深浅及形成构造环境差异、地化环境差异 ,要探索大型、超大型铀矿形成的岩浆定位部位与层圈构造、地壳韧脆性构造转换面、地球化学转换面的耦合条件。
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.
出处
《铀矿地质》
CAS
CSCD
2001年第6期321-327,331,共8页
Uranium Geology
基金
核工业科学基金 (编号 :Y71 96R1 80 2 )与核能资源研究开放实验室 (编号 :院开 980 1 980 5 )联合资助
