论文部分内容阅读
本文以银山矿床的地质地球化学特征为依据，以水－岩反应及其同位素交换为出发点，对前人关于该矿床成矿流体主要来自岩浆水的结论提出质疑。根据流体和蚀变岩石的氧同位素组成进行了水－岩氧同位素交换的反演计算，表明银山矿床成矿流体应来源于大气降水，是大气降水在深处较高温度和低Ｗ／Ｒ比值下与千枚岩之间发生的水－岩反应的产物。岩浆活动主要为成矿作用提供了热源。
Based on the geo-geochemical characteristics of the Yinshan deposit and starting from the water-rock reaction and its isotope exchange, this paper questions the previous conclusions that the ore-forming fluid of this deposit is mainly derived from magmatic water. Based on the oxygen isotopic compositions of fluid and altered rocks, the inversion of water-rock oxygen isotopes is performed, which indicates that the ore-forming fluids of Yinshan deposit should be derived from atmospheric precipitation, which is due to the precipitation at higher depths and lower W / R The product of the water-rock reaction with the phyllite at the ratio. Magmatic activity mainly provides the heat source for metallogenesis.