摘要
研究了包裹体的温压地球化学特征 ,获得了包裹体的均一温度、盐度和压力。结果表明 ,包裹体盐度由成岩阶段→岩浆期后铜钼成矿阶段→铜铁成矿阶段→成矿期后无矿阶段 ,呈逐渐降低趋势 ,而瞬时压力演化则呈反向特征 ;斑岩体石英斑晶中单个熔体包裹体和铜钼矿体石英脉中单个流体包裹体气相成分都以富含CO2 为特征 ,有机质成分 (C1—C4 )相当一致 ,均含有相近的硫的化合物 (H2 S或SO2 ) ,显示成矿物质来源与斑岩体演化有密切成生联系。
Systematical study has been carried out on thermobarogeochemical features of inclusions,and homogenization temperature,salinity and pressure were obtained.Analyses show that salinity of the fluid indusions is gradually decrease from synmagmatic to post magmatic Cu Mo mineralization to Cu Fe mineralization stage to non mineralization stage,and the pressure is gradually increase.Besides, the gas phase components of melting inclusions within quartz phenocryst from the granite porphyry are similar to those of the fluid inclusions within quartz from the Cu Mo mineralized quartz veins, characterized by enrichment of CO 2 and similar compounds(H 2S and SO 2), which shows that source of the deposit was derived from the granite porphyry.
出处
《华南地质与矿产》
CAS
2001年第2期43-51,共9页
Geology and Mineral Resources of South China
基金
国家自然科学基金项目 (No .40 0 730 2 5 )资助。
