首页 | 本学科首页   官方微博 | 高级检索  
     检索      

江西龙源坝岩体中南部“交点型”铀成矿地质条件浅析
引用本文:党飞鹏,梁发辉,李志鹏.江西龙源坝岩体中南部“交点型”铀成矿地质条件浅析[J].地质与资源,2014,23(5):482-485.
作者姓名:党飞鹏  梁发辉  李志鹏
作者单位:核工业270研究所, 江西 南昌 330200
摘    要:研究区位于桃山-诸广铀成矿带南段,龙源坝复式杂岩体中南部.侏罗—白垩纪(燕山期),区域构造应力环境由挤压造山演变为陆壳伸展,伴随强烈的构造-岩浆活动和铀成矿作用.区内发育NE、近E-W、NW向3组断裂构造.断裂构造是主控矿因素,限制了区内燕山晚期花岗质岩浆的侵入形态,及铀矿床、铀矿(化)点和异常点(带)的空间分布.NW、NWW向张性断裂多被燕山晚期中基性脉岩充填,呈成群成组的斜列式等间距展布,岩性为辉绿岩和斜闪煌斑岩.中基性脉岩与灰白—灰黑色微晶石英脉或浅红褐色-杂色硅化带/硅化破碎带的重接、斜接、反接复合部位是"交点型"铀矿化赋存的有利场所.矿化或近矿部位的中基性脉岩多褪色为黄褐色—灰白色,发育硅化、赤铁矿化、水云母化、褐铁矿化,可见黄铁矿、方铅矿、铜铀云母、钙铀云母等.综合分析认为,研究区具有较好的"交点型"铀成矿地质条件,铀资源找矿潜力良好,铀矿化与中基性脉岩具密切的空间和成因联系.

关 键 词:中基性脉岩  硅化带  交点型铀矿  龙源坝岩体  江西省
收稿时间:2013-12-06

GEOLOGICAL CONDITIONS OF THE INTERSECTION-TYPE URANIUM METALLIZATION IN CENTRAL SOUTH OF LONGYUANBA COMPOSITE GRANITE BODY IN JIANGXI PROVINCE
DANG Fei-peng,LIANG Fa-hui,LI Zhi-peng.GEOLOGICAL CONDITIONS OF THE INTERSECTION-TYPE URANIUM METALLIZATION IN CENTRAL SOUTH OF LONGYUANBA COMPOSITE GRANITE BODY IN JIANGXI PROVINCE[J].Geology and Resources,2014,23(5):482-485.
Authors:DANG Fei-peng  LIANG Fa-hui  LI Zhi-peng
Institution:No. 270 Research Institute, CNNC, Nanchang 330200, China
Abstract:The study area is located in the central south of the Longyuanba composite granite body, which lies in the south of Taoshan-Zhuguang uranium metallogenic belt. During Jurassic and Cretaceous, the tectonic environment in South China was in the transitional situation from compression to extension. Under such a background, the structure system in Longyuanba region is mainly developed in three groups in northeast, northwest and east-west directions. The NW-trending faults are perfectly filled by the intermediate-basic dikes, distributed with equal spaces. The boundaries between the dikes and the granitoids are obvious. The rock types of the dikes are diabase and lamprophyre. The uranium mineralization of the study area commonly occurs in the intersections of grey quartz veins and the intermediate-basic dikes. The dikes around the mineralization fade to brown or light gray from green-gray color, with alterations of silicification, hematitization, hydromicazation, limonitization, pyritization etc. Comprehensive analysis reveals that the uranium mineralization in the area is closely related to the intermediate-basic dikes in space, time and genesis. The study area is with good conditions and potentials for intersection-type of uranic mineralization.
Keywords:intermediate-basic dike  silicified zone  intersection-type uranium  Longyuanba intrusive rock  Jiangxi Province
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《地质与资源》浏览原始摘要信息
点击此处可从《地质与资源》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号