鄂尔多斯盆地构造热演化与砂岩型铀成矿

鄂尔多斯盆地火山活动、地温场、热流场、古地温、构造演化等方面的综合研究表明,该盆地的构造热演化为流体流体、流体岩石之间的相互作用提供了基础,为有机矿产和砂岩型铀矿的形成创造了条件,尤其是中晚侏罗世白垩纪的构造热事件,在铀源物质的提供、铀的运移,铀的富集和沉淀成矿等方面起着重要的作用。

The relationship between tectonic-thermal evolution and sandstone-type uranium ore-formation in Ordos basin

The comprehensive study of the volcanic activities,the geothermal field,the thermal flow field,the paleogeo-thermal activity and the tectonic evolution of the Ordos basin indicates that the tectonic-thermal evolution of the Ordos basin has offered the basis for the fluid-fluid and fluid-rock mutual reactions,and has created favourable conditions for the formation of organic mineral resources and sandstone-type uranium deposits.Especially,the tectonic-thermal event during Middle-Late Jurassic to Cretaceous played an important role in providing uranium source material,and assisting the migration,the concentration and precipitation of uranium and uranium ore-formation.