广西地壳构造演化与富铀地层的形成及其时空分布规律

GUANGXI CRUSTAL STRUCTURAL EVOLUTION AND THE FORMATION AND DISTRIBUTION REGULARITIES OF U-RICH STRATA

本文在总结广西大地构造特点及其演化规律的基础上,进一步探索了槽、台、洼3个发展阶段中各类富铀地层的产出特点,形成条件和时空分布规律。尤其在地洼发展阶段,这些富铀地层都受到不同程度的改造,使铀等成矿物质产生活化运移,并聚集成矿,形成具有层控特点的多因复成型铀矿床,从而为区内找矿指明了方向。

Based on summing up Guangxi geotectonic features and evolutionary regularities, this paper discusses the occurrence features, formation conditions and time-space distribution regularities of various U-rich strata during the development of geosyncline, platform and diwa stages. Especially, during diwa stage all those U-rich strata might be reworked to a certain degree and resulted in the mobilization of uranium, then enriching to form polygenetic composite uranium ore deposits with stratabound features. This study will help to point out the direction for prospecting in the region.