鄂尔多斯盆地东南部直罗组油气流体活动特征与铀成矿作用初探

Preliminary research on oil-gas fluid activity character and uranium mineralization of Zhiluo Formation in southeast of Ordos Basin

鄂尔多斯盆地东南部地区直罗组中砂岩型铀矿化与油气改造作用关系密切。从宏观及微观角度分析了鄂尔多斯盆地东南部直罗组油气流体空间展布规律、油气流体对砂体的后生蚀变改造作用,探讨了油气活动期次及其与砂岩型铀成矿的关系,对铀成矿规律认识与成矿预测具有重要意义。

The sandstone type mineralization of Zhiluo Formation in the southeast of Ordos Basin obviously relates to the reformation of oil-gas fluid. It is analyzed that the space distributing character of oil-gas fluid, the epigenetic alteration reformation of oil-gas fluid in sand body from the point of macroscopical and microcosmic, discussed the stage of oil-gas fluid activity and the relationship between oil-gas fluid with mineralization of sandston-hosted uranium deposits, it＇s of important meaning to the research uranium mineralization pattern and prognostication.