贵州南华纪—震旦纪沉积大地构造及其对沉积矿产的控制作用  

Sedimentary Geotectonics and Its Control Function of Sedimentary Mineral in Nanhua Period-Sinian Period in Guizhou

作　　者：杜远生[1] 周琦[2] 余文超[1] 张亚冠 王萍[1] 覃永军[2] 庞大卫 DU Yuan-sheng;ZHOU Qi;YU Wen-chao;ZHANG Ya-guan;WANG Ping;QIN Yong-jun;PANG Da-wei(Faculty of Earth Sciences,China University of Geosciences,Wuhan 430074,Hubei,China;Guizhou Bureau of Geology and Mineral ExploraTion and Development,Guiyang 550004,Guizhou,China)

机构地区：[1]中国地质大学(武汉)地球科学学院,湖北武汉430074 [2]贵州省地质矿产勘查开发局,贵州贵阳550003

出　　处：《贵州地质》2018年第4期282-290,共9页Guizhou Geology

基　　金：国土资源部公益性行业科研专项项目(编号:DD20160346-54);中国地质调查局<贵州省矿产资源调查成果综合集成与服务产品开发>(编号:DD20160346-28);<贵州锰矿成因与成矿规律>专题(DD20160346-54);贵州省锰矿资源预测评价科技创新人才团队(黔科合平台人才[2018]5618);贵州省地矿局研究项目(2015-No.4)及联合资助

摘　　要：新元古代早期(>820 720 Ma),华南由扬子地块、华夏地块和江南造山带3个构造单元组成。新元古代晚期,南华纪-震旦纪(720 541 Ma)沿新元古代早期的江南造山带发育一裂谷盆地-南华裂谷,贵州东部是南华裂谷的重要组成部分。传统认为黔东地区该裂谷盆地为北北东向,越来越多的证据证明该裂谷盆地为北东东向。黔东地区南华纪裂谷盆地具有典型的地堑、地垒结构,并控制着"大塘坡式"锰矿的分布。震旦纪之后,裂谷盆地处于沉降阶段,沉降中心向南迁移到凯里-玉屏一线。震旦纪时期,扬子地块和南华裂谷存在明显的滨浅海磷矿-碳酸盐岩和深水泥质岩-硅质岩的沉积分异。扬子地块和南华裂谷控制着扬子地块震旦系陡山沱组磷矿和南华裂谷老堡组重晶石等沉积矿产的分布。富磷矿位于松桃-贵阳同沉积断裂以北的扬子地块南缘,重晶石矿发育于裂谷盆地强烈沉降区的天柱-岑巩一带。In early Neoterozoic( >820-720 Ma),South China formed with Yangtze block,Cathaysia Massif and Jiangnan orogen.In late Neoterozoic,Nanhua rift valley developed along Jiangnan orogen of early Neoterozoic in Nanhua period-Sinian period(720-541 Ma),east Guizhou is an important part of Nanhua rift valley.The view of tradition thought that east Guizhou of this valley is NNE,more and more evidences improved that this valley is NEE.The rift valley of Nanhua period in east Guizhou has typical horst and graben structure,it also control the‘Datangpo type’manganese deposit distribution.Rift valley went into sedimentation stage after Sinian period,the center migrated to the south of Kaili-Yuping.In Sinian period,Yangtze block and Nanhua rift valley had obvious sedimentary differentiation of phosphorate deposit in shallow sea-carbonate rock and pelite-silicalite.Yangtze block and Nanhua rift valley controlled the distribution of phosphorite deposit of Doushantuo formation,Sinian period of Yangtze block and barite in Laobao formation of Nanhua rift valley.Rich phosphprite developed in the south margin of Yangtze block in the north of Songtao-Guiyang syndepositional fault,barite developed in Tianzhu-Cengong area in where the rift valley sedimented strongly.

关 键 词：贵州 南华纪 震旦纪 裂谷盆地 控矿作用 

分 类 号：P53[天文地球—古生物学与地层学] P588[天文地球—地质学]