Ore-Fluid Systems of Fine Disseminated Gold Deposits Along the Southeastern Margin of the Yangtze Plate  

作　　者：张景荣 陆建军 吴爱萍 朱恺军 盛中烈 

出　　处：《Chinese Journal Of Geochemistry》1995年第3期193-202,共10页中国地球化学学报

摘　　要：Fine disseminated gold deposits occurring along the southeastern margin ofthe Yangtze Plate belong to the epithermal type resulting from different systems of oreforming fluids. According to their sources, the ore-forming fluids can be divided intofour systems: a) meteoric water system; b) oil-brine system; c) basin-brine system; andd) magmatic-formation water system. The four hydrothermal systems are responsiblefor four types of gold deposits, respectively The meteoric water system produces hotspring gold deposits. The basin-brines, which are derived from fissure water, structuralwater and absorbed water sealed up in strata, are responsible for the basin-brine-typedeposits. The oil-brine system, having the same source as the basin-brines, is characterizedby the involvment of organic matter and is responsible for the oil-brine-type deposits.Inclusion fluld data show that there are obvious differences in chemical compesition andcarbon, oxygen, hydrogen and sulfur isotopes for these hydrothermal systems. Differentmetalloenic provinces, in which one of the four systems is dominant, can be recognizedin the region.Fine disseminated gold deposits occurring along the southeastern margin ofthe Yangtze Plate belong to the epithermal type resulting from different systems of oreforming fluids. According to their sources, the ore-forming fluids can be divided intofour systems: a) meteoric water system; b) oil-brine system; c) basin-brine system; andd) magmatic-formation water system. The four hydrothermal systems are responsiblefor four types of gold deposits, respectively The meteoric water system produces hotspring gold deposits. The basin-brines, which are derived from fissure water, structuralwater and absorbed water sealed up in strata, are responsible for the basin-brine-typedeposits. The oil-brine system, having the same source as the basin-brines, is characterizedby the involvment of organic matter and is responsible for the oil-brine-type deposits.Inclusion fluld data show that there are obvious differences in chemical compesition andcarbon, oxygen, hydrogen and sulfur isotopes for these hydrothermal systems. Differentmetalloenic provinces, in which one of the four systems is dominant, can be recognizedin the region.

关 键 词：金矿床 金属流体 碳同位素 流体包裹体 氧同位素 硫同位素 

分 类 号：P618.51[天文地球—矿床学] P597[天文地球—地质学]