Geological structure of the Shengyuan volcanic basin in Jiangxi Province and its controlling for uranium mineralization

Previous geological prospecting for uranium deposits in Shengyuan volcanic basin of Jiangxi focused mainly on ore-bearing potential of the Early Cretaceous Daguding Formation and Ehuling Formation, as well as ore-bearing strata of Early Cambrian Waiguankeng Formation. But controlling of the structures over uranium mineralization has long been ignored. Based on collection and compilation for the published data, along with the latest research results in this region, controlling effect of the structures on the uranium mineralization was studied in details and mineralization regularity was also summarized. The results show that various-level and-order fault structures formed in different periods constitute an ore-controlling structural system. The Pingxiang-Guangfeng deep fault determines the east to west distribution of the Wugongshan-Yanshan uranium metallogenic belt. And relatively large structural joints determine the occurrence positions of uranium ore deposits, with the low-level EW-trending, NE-trending and NW-trending geological structures controlling the positions of uranium ore bodies. The conclusions will help further understanding the regularity of uranium mineralization in the area and provide reference and thinking for uranium prospecting in the future.