柴达木盆地东部层间氧化带砂岩型铀矿形成条件分析

Analysis on metallogenic conditions of sandstone-type uranium deposits at eastern margin of Chaidam basin

本文从盆地构造演化、各演化期相关沉积、岩石地球化学特征、区域水文地质条件及沉积盖层中后生改造作用等方面 ,分析了柴达木盆地东部层间氧化带砂岩型铀矿的形成条件 ,认为该区有利于形成层间氧化带砂岩型铀矿化 ,是一个值得进一步探索的地区。

In this paper the formation conditions of interlayer oxidation zone sandstone-type uranium deposit in the eastern part of Chaidam basin are analysed, such as the tectonic evolution, the characteristics of sedimentation and petrogeochemical characteristics, the regional hydrogeological conditions, as well as epigenetic rewor-king of the sedimentary cover. The author comes to a conclusion that the study area is favorable for the formation of interlayer oxidation zone sandstone-type uranium mineralization, and the study area is an area worthy of further prospecting and investigation.