湖北省上扬子地层区震旦纪陡山沱组分段与矿产特征

Subsection of Doushantuo Formation of Sinian and Its Mineral Characteristics in Upper Yangtze Strata Region in Hubei Province

湖北省上扬子地层区震旦纪陡山沱组分布较为广泛,但岩性和厚度变化较大,又是磷、铅、锌、银钒、锰矿等矿产的重要产出层位,由于上述矿产具有明显层控性,而含矿岩系常在一定区域范围内又发生相变,这给找矿工作带来诸多困难。为更有效地开展该地区地质矿产调查、成矿专属性研究和矿产普查、勘察等,迫切需要统一划分陡山沱组段级岩石地层单位。为此,通过项目研究成果,拟对区内陡山沱组作四段划分,并赋予各段相关内容,以便更好掌握岩石组合、沉积结构、时空存在状况和发展演化规律,为开展地质找矿、部署普查和勘察工程提供资料。

Doushantuo Formation of Sinian widely distributed in Upper Yangtze strata Region in Hubei Province,which thickness and lithology have big diversity in different area,this formation also is a significant mineral producing zone of P,Pb,Zn,Ag,V,Mn et.al.For the obvious strata-bound character of the above-mentioned minerals and the facies change of ledge in some particular area,all these make a big challenge for mineral exploration work.In order to effectively develop the survey of geology mineral resources,the research of mineralize exclusive,and the mineral exploration et.al,rock stratigraphic unit of Doushantuo Formation urgently need to unified classify.Through working result,Doushantuo formation in the work area could be divided into four members,and different member has different property.By this method,rock assemblage,deposition texture,occur condition in time and space,and the law of development evolution could be much easier to master,and also can provide information for the further geologic prospecting,deployment and investigation project.