摘要
黔西北各岩石地层单元铅锌背景含量、沉积旋回、水城赫章主要铅矿矿床的含矿层、近矿围岩、矿石矿物稀土元素和铅同素研究表明：玄武岩、辉绿岩并非本区铅锌矿源岩（层），铅主要来源于玄武岩下伏的沉积岩；成矿铅的成因主要是壳源铅，其次是造山带铅；深海沉积的凝缩段是Ｚｎ及部分ｐｂ的矿源层；玄武岩之下各沉积旋回下部的碎屑岩一般铅锌背景值高，也可能为成矿提供物源。
Based on the studies of background value of Pb and Zn of geolith and depositional cycle in northwest Guizhou and the feature of REE and liadisotope in the ore bearing bed,wall rock alteration and ore mineral of the major Lead Zinc ore deposites in the Shuicheng Hezhang area,the authers point out that basalt and diabase are not souce bed rock of Pb and Zn,and that Pb of metallization comes mainly from the crust and orogenic belt.The condensed sequence of deep sea sediments is the major source bed of Pb and Zn.The clastic sedimentary rock in the bottom of sedimentary cycle under the basalt has high backgound value of Zn and can be the material source of Zn ore deposit.
出处
《贵州工业大学学报（自然科学版）》
CAS
1998年第6期26-34,共9页
Journal of Guizhou University of Technology(Natural Science Edition)
基金
贵州省科委85攻关课题资助
