滇西陇川盆地砂岩型铀矿成矿条件及远景分析

ANALYSIS ON METALLOGENIC CONDITIONS AND PROSPECT OF SANDSTONE TYPE URANIUM DEPOSITS IN LONGCHUAN BASIN WESTERN YUNNAN

本文从大地构造、地貌景观及古气候、铀源、盆地构造格架及构造分区、上第三系岩性、岩相、水文地质及水文地球化学、铀的富集及深部信息入手，与邻区龙川江赋矿盆地对比，对陇川盆地砂岩型铀矿成矿条件进行分析。认为盆地东南隆起带阻水断裂上方富含有机质。

This paper discusses geotectonics,geomorphologic landscape,and paleoclimate,uranium source,structural pattern and structural division of the Longchuan basin,lithologies and lithofacies of Upper Tertiary,hydrogeology and hydrogeochemistry,concentration of uranium and deep information,compares the above information with that of U productive Longchuanjiang basin,and analyzes the metallogenic conditions of sandstone type uranium deposits.It is considered that the tectonic erosional depressions located on the hanging wall of water blocking faults in the southeastern uplifted zone of the Longchuan basin,and containing abundant organic matter and carbonaceous matter are the prospective areas for sandstone type uranium deposits in Longchuan basin.