Abstract:

The Turpan-Hami Basin is a new nuclear resource base,but before 2000,its uranium prospection and production enforced difficulty because of the stratum problem of the uranium bed.The authors distinguish and compare the strata by using not only biological stratigraphy and rock stratigraphy but also mudstone mineralogy and element geochemistry.The research finds that the target strata,which are named Shuixigou Group,were formed from late Lower Jurassic stage to early Middle Jurassic stage.It has five stratum units, which are Badaowan Fomation,Sangonghe Formation，Lower Member,Middle Member and Upper Member of Xishanyao Fornmtion.Uranium mineralization mainly develops in Xishanyao Formation,especially Lower and Upper Member of Xishanyao Formation.Badaowan Formation and Sangonghe Formation generally have no mineralization.

Key words: Shuixigou Group, sandstone-type uranium deposit, the Turpan-Hami Basin