摘要
蔡江地区处在桃山矿田的西南部,区内断裂构造极其发育,不同级别断裂构造对铀矿化起着不同的控制作用。通过野外地质调查并类比矿田构造特征,认为区内构造具有多期活动、性质复杂的特点,将该区构造级别划入桃山地区第三、四级别构造。在此基础上论述了区内断裂构造与铀成矿的关系,认为断裂构造不仅为成矿流体的运移提供了通道,为成矿物质提供了沉淀富集的场所,而且还影响着铀矿床(点)的空间分布,并提出了"构造产状的变异部位、构造交汇部位或构造与煌斑岩复合部位、构造的膨大部位"三处成矿有利地段。综合分析认为:蔡江地区断裂构造是铀成矿的必要条件,与成矿有着密切关系,菱形构造格架内矿化点带找矿潜力较大。
Faults are extremely developed in Caijiang area which is located in the southwest of Taoshan Orefield. Different faults has different control effect on uranium mineralization.Through the field investigation and compare with the structural characteristics in the orefield,structure has characteristics of multi period activities and complex nature. The structure belongs to the the third and the fourth level in Taoshan area.On the basis of this,the paper stated the relationship between the structure and uranium mineralization in the area,and considered that the fault structure provides channels for the migration of ore-forming fluids space for the accumulation of precipitation.The paper also show that the structure affected the spatial distribution of uranium deposits（ points）,and put forward three mineralization zones including the＂structural occurrence mutation site,intersection parts of structures or composite parts of structures with lamprophyre and structures bulge＂.Therefore,the structure which is closely related to the mineralization in Caijiang is a necessary condition for uranium mineralization,and the mineralized sites in the rhombus structural framework have great potential for prospecting.
作者
陈欣
吴勇
徐勋胜
张云龙
张军
CHEN Xin;WU Yong;XU Xun-sheng;ZHANG Yun-long;ZHANG Jun(Research Institute No.270,CNNC,Nanchang 330200;East China University of Technology,Nanchang 330013;Zhengzhou Normal University,Zhengzhou 450000)
出处
《矿产勘查》
2018年第6期1113-1119,共7页
Mineral Exploration
基金
中国核工业地质局铀矿地质项目(编号:201632
201806-1)资助
关键词
桃山矿田
构造特征
铀矿化
江西
southwest of Taoshan orefield
structural features
uranium mineralization
