贵州寒武系底部黑色岩系型矿床沉积构造特征研究  

Primary Study on the Sediment Structures in Black-shale-series Deposits of the Basal Cambrian,Guizhou Province

作　　者：魏怀瑞[1] 杨瑞东[2] 高军波[1] 王伟 

机构地区：[1]贵州大学资源与环境工程学院,贵州贵阳550003 [2]贵州大学研究生院,贵州贵阳550025 [3]重庆地质矿产研究院,重庆400042

出　　处：《现代地质》2012年第4期673-681,共9页Geoscience

基　　金：教育部博士点基金项目(20105201110002);贵州省长基金;贵州大学博士点学科建设基金联合资助项目

摘　　要：在中国南方地区早寒武世广泛分布着一套黑色岩系型矿床,其矿物组成和沉积地球化学都表现出明显的热水沉积特征,该黑色岩系沉积构造方面的研究却很少。通过对贵州寒武系底部3个不同黑色岩系型矿带Ni-Mo多金属成矿带、V成矿带、重晶石成矿带的宏观和微观构造的研究,总结了其沉积构造特征,发现其中存在大量类喷溢和喷流过程形成的沉积构造、气-水热液作用形成的沉积构造、胶体及生物化学沉积构造、准同生变形构造等沉积构造和沉积构造序列,分析了不同成矿带之间的沉积构造异同,这对该类型矿床成矿理论的研究具有重要意义。Black-shale-series deposits related to hydrothermal sedimentation were widely distributed in the basal Cambrian,southwest of China.According to the study on micro and macro structures of three different types of black-shale-series deposit belts,namely Ni-Mo ore deposit belt,V ore deposit belt and barite deposit belt,sedimentary structural features are concluded.Specifically,sedimentary structures and structures series that formed in extravasation,in pneumato-hydrothermal process and in colloidal-biochemical process,as well as some penecontemporaneous sedimentary structures,were found and determined.As a result,comparison analysis was made on the differences and similarities of the sedimentary structures among those three deposit belts,which is of importance for mineralization theories related to deposits of this type.

关 键 词：沉积构造 黑色岩系 寒武系 贵州 

分 类 号：P611.22[天文地球—矿床学] P588.2[天文地球—地质学]