摘要
从稀土元素特征、稳定同位素、包裹体成份等方面入手,对庞家河及外围地区金矿床成因作了简要分析。结果表明该区金矿床的成矿物质主要来自地壳,经多期多阶段的中低温热液流体作用,沿着不同矿化围岩、不同构造系统、不同构造层次,从而形成各具特色的金矿床(点);泥盆系上统绿泥绢云千枚岩和石炭系中上统草凉驿组碎屑岩-碳酸盐建造是区内的主要直接矿源层,另外青石垭组、唐藏石英闪长岩、何家庄岩体也可能提供了部分金源。并在此基础上总结出该区的金成矿作用模式图。
From the characteristics of rare earth elements,stable isotopes,inclusion composition and other aspects,It makes a brief analysis on the causes of the Pang Jiahe gold mine. The results show that the gold deposits in the metallogenic material mainly comes from the earth＇s crust,the multiphase multi- phase fluids（ medium to low temperature,along the different mineralization of surrounding rock,tectonic system,tectonic level,thus forming different characteristics of gold deposits（ points）; Devonian system on system under group of chlorite Xiaodonggou sericite phyllite and carboniferous system in upper Caoliangyi group in the clastic rock to carbonate formation is the main source bed directly,also Qinshiya group,Tangzang quartz diorite,Hejiazhuang rock mass may also provide some of the goldsource. And on this basis,summed up the patterning of gold mineralization in this region.
出处
《延安大学学报（自然科学版）》
2015年第1期56-60,共5页
Journal of Yan'an University：Natural Science Edition
关键词
稀土元素
稳定同位素
包裹体
成矿作用
成矿模式
rare earth elements
stable isotopes
inclusions
mineralization
metallogenic model
