论文部分内容阅读
地幔流体是以Ｃ－Ｈ－Ｏ为主的体系，富含Ｈ、ＣＯ２、ＣＨ４、Ｈ２Ｓ、Ｈ２Ｏ和大量的不相容元素（如Ｋ、Ｐ、Ｌｉ等）及一定量的金属氧化物，在不同地质环境下其组成成分有一定的变化．地幔流体有地幔柱型、洋中脊玄武岩型和岛弧型３种主要源区，通过交代和（或）溶解地幔、地壳岩石等方式迁移、富集而成矿．夹皮沟金矿田内构造－岩浆活动及区域变质作用表明该区地幔活动频繁且强烈，金矿成矿流体具有地幔流体组成和成矿作用特征，显示金矿成矿作用与地幔流体活动密切相关
Mantle fluid is mainly C-H-O system, rich in H, CO2, CH4, H2S, H2O and a large number of incompatible elements (such as K, P, Li, etc.) and a certain amount of metal oxide, Under different geological environment its composition changes to some extent. Mantle fluids include mantle plumes, mid-oceanic ridge basalts, and island arcs. Three main source areas of mantle fluids are migrated and enriched through the replacement and / or dissolution of mantle and crustal rocks. The tectono-magmatic activity and regional metamorphism in the Jiapigou gold deposit show that the mantle activity is frequent and intense in this area, and the metallogenetic fluid in the gold mine has the features of mantle fluid composition and mineralization, indicating that the gold mineralization is closely related to the activity of mantle fluid