摘要
黔西北铅锌成矿区Pb、S、C、O、Sr同位素组成特征显示,成矿物质具多来源,成矿作用具多阶段性。Pb、Zn主要来源于下伏老地层,与较高地球化学背景的前震旦系基底火山碎屑岩有关,也与峨眉山玄武岩的喷发有成生联系;S来源于海相硫酸盐还原,O、C来源于海相碳酸盐,成矿流体水主要来源于深部地层变质水,后期有少量大气降水混合。
Pb, S, C,O and Sr isotopes in the Pb - Zn deposits in the northwest Guizhou show multi source ore - forming materials and multi stage mineralization. Pb and Zn mainly came from underlying old strata with higher geochemical background, and also had genetic relations with eruption of Emeishan basalt. Sulfur came from reduction of marine sulfate, and oxygen and carbon from marine carbonate. Ore - forming fluids are mainly came from metamorphic water of deep strata, and mixed with less meteoric water.
出处
《地质与勘探》
CAS
CSCD
北大核心
2007年第6期32-35,共4页
Geology and Exploration
基金
中国地质调查局地质大调查项目资助(编号200410200019)。
关键词
同位素特征
成矿物质
铅锌矿
黔西北
isotope characteristics, ore- forming materials, lead- zinc ore, northwest Guizhou
