摘要
窖岭铀矿床,工业矿体及矿化层均赋存在F_8断裂中。本文论述之窖岭铀矿床属层控矿床,铀源层为断裂上盘的龙潭组地层与下盘茅口组上段地层,铀源层中的分散铀,在地下水的浸泡溶滤下释放到水中,含铀地下水在F_8断裂中运移,在特定的部位,由于水对茅口组下段灰岩层的溶蚀,导致水由酸性变为中性,水的溶解能力变小,水中铀被构造岩中的泥炭质胶结物吸附沉淀,进而形成铀矿,窖岭铀矿床的形成过程是在地下水的作用下,发生的“溶滤、运移、沉淀”过程。
Either the economic orebodies or the minera-lized beds of the Jiaoling uranium deposit occuralong the P_8 fault. Being a (?)tratabound deposit, theJiaoling deposit has its uranium coming from thelongtan, formation at the hanging wall and theupper member of Maokou, formation at the footwall. The uranium dispersed in the source beds,being released by groundwater lcaching, migratedalong the F_8 fault. The corrosion of the lowerMaokou limestone changed the groundwater fromacidic to neutral with the lowering of its disso-lving capacity, when the uranium ni water wasadsorbed and precipitated by the peat cement intectonic to form uranium deposit. In short, theuranium deposit was formed under the leaching,transportation and precipitation actions of grou-ndwater.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
1992年第4期35-38,共4页
Hydrogeology & Engineering Geology
