松辽盆地西部斜坡构造-流体演化特征与铀聚集  

Structure and Fluid Evolution of the Western Slope of Songliao Basin and Its Relation to Sandstone Type Uranium Mineralization

作　　者：封志兵[1] 聂逢君[1] 严兆彬[1] 江丽[2] 谷社峰[3] 陈路路[1] 

机构地区：[1]东华理工大学核资源与环境国家重点实验室培育基地,江西南昌330013 [2]中国地质大学地球物理与信息技术学院,北京100083 [3]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《东华理工大学学报（自然科学版）》2014年第1期13-20,共8页Journal of East China University of Technology(Natural Science)

基　　金：国家自然科学基金项目(40972067);大庆油田"大庆长垣地区砂岩型铀矿后生氧化作用;成矿条件与找矿方向"项目;江西省研究生创新专项资金项目(YC2012-S085)

摘　　要：构造与流体演化对砂岩型铀矿成矿有协同控矿作用的关系。以松辽盆地西部斜坡地层及构造演化为背景,对比分析测井等资料,通过野外地质、放射性地球物理、水文地质等调查及测量工作,应用砂岩型铀矿成矿理论分析认为:松辽盆地构造活动对西部斜坡构造演化、地下水运移及断裂的分布情况产生影响,控制铀聚集。斜坡西缘为层间氧化带砂岩型铀矿有利区,目的层为第三系地层;而斜坡中段则有利于古河道砂岩型铀矿成矿,四方台组为主要含矿层位。该区域铀矿化受深部断裂控制明显。对西部斜坡中段的后期铀矿勘查可借鉴二连盆地巴彦乌拉古河道砂岩型铀矿床成矿模式与勘探历程。Tectonic evolution and fluid evolution are two main controlling factors of uranium ore forming processes. Based on the summary of strata and structure distribution of the western slope of Songliao Basin. Through contrast and analysis of the data of pseudo logging and drilling, etc. Combination of sandstone-type uranium deposit mineralization theory and radioactive geophysical and hydrogeologieal investigations： Tectonic activities in Songliao Basin have impact for structural evolution, groundwater migration and the distribution of faults, which control uranium mineralization at the western slope. It is favourable for interlayer oxidation zone type sandstone hosted uranium deposits mineralization in the western margin of the western slope, the prospecting strata is tertiary stratum. On the middle part in the minerahzations. Sifangtai formation deep faults in this area. we should type uranium deposit in Bayanwula western slope is propitious to the paleochannel sandstone type uranium deposit is the major ore-bearing layer. Uranium mineralization are controlled by the referring to the experience of uranium prospecting of paleo-channel sandstone area, Erlian basin.

关 键 词：松辽盆地 西部斜坡 砂岩型铀矿 构造演化 流体运移 

分 类 号：P619.14[天文地球—矿床学]