摘要
基于多元论的观点,讨论了潼峪金矿含金石英脉的成因。燕山期小秦岭处于大陆边缘活化带,断裂、岩浆活动十分强烈,形成了高热流环境。燕山期花岗岩侵位浅,裂隙系统提供了良好的循环通道,加上丰富的地下水条件,在花岗岩热力作用下,受到加热的下降雨水和来自花岗岩的高温富碱流体是围岩中的金和有关成矿元素活化迁移的有效介质,在中深条件下形成了石英脉型金矿,在浅成条件下形成了蚀变岩型金矿。
Based upon the study of geological characteristics and stable isotope of the Tongyu gold deposits, the genesis of the deposits is discussed in this paper.
The Tongyu gold deposits are distributed in the activization zones of the paleo-continental margins.They were formed along with the tectono-magmatic zone during the Yanshanian Movement.
The energy source of Au--mineralization was proveded by the Yanshanian tectono-magmatic activity.
The genetic materials were originated mainly from Archaean Taihua group and Yanshaian granite.
The genetic solution is a mixed water which is composed of the meteoric water with the magmatic water.
According to the data above, the writer considers that the deposits belong to the stratabound deposits of the egigenic gold-bearing qurtz veins.
关键词
金矿
矿床成因
矿化分带
成矿时代
mineralization zoning, mineralization epoch, stable isotope, polyg-ene theory
