摘要
研究区铜多金属矿的S ,Pb同位素特征均显示 ,成矿物质来源以深源热流体为主 ,并有少量壳源物质参与。铅同位素的模式年龄表明成矿作用分为两期 :次要成矿期为晚中生代同沉积成矿 ;主要成矿期为早第三纪热液成矿 。
The S Pb isotopic geochemical characteristics shows that source of the Hexi copper multi metal deposit came mainly from deep hypothermal fluids and secondary from the crust derived matter. Two epochs of mineralization can be distinguished with the model age of lead isotope: late Mesozoic syngenetic mineralization and early Tertiary hydatogenesis which played an more important rule in the process of mineralization and was associated with early Yanshanian nappe structure.
出处
《华南地质与矿产》
CAS
2001年第3期36-39,共4页
Geology and Mineral Resources of South China
基金
原地质矿产部定向基金项目 (地科定 98-12 )
