云南腾冲-梁河地热系统与现代热泉型金矿化作用  

THE TENGCHONG-LIANGHE GEOTHERMAL SYSTEM AND HOT SPRING-TYPE GOLD MINERALIZATION IN YUNNAN PROVINCE

作　　者：侯宗林[1] 郭光裕 

机构地区：[1]冶金工业部天津地质研究院

出　　处：《地质论评》1991年第3期243-249,共7页Geological Review

摘　　要：本文从研究腾冲-梁河地热区区域地质构造环境和热液循环系统产物的地质、地球化学特征入手,对热泉型金矿化作用的控制条件,金矿化强度等进行了分析,提出金沉淀的最重要机制是含矿热液的沸腾作用。沸腾作用和热液循环的最主要的动力足频繁的断裂构造活动和热液本身具有的超临界高温、高压性质。指出“热海”二级热液循环系统表现的地质、地球化学特征与热泉型金矿化模式完全可以对比,是该类型金矿生成的良好环境。预测地表以下400m范围内有矿体存在。On the basis of the regional geological structure and the geochemistry and spatial distribution of the products of the hydrothermal circulation systim in the Tengchong-Lianghe geothermal field, this paper analyses the constraints of the hot spring-type gold mineralization, such as the water source, thermal source, fracture systems, hydrothermal circulation system, drain vents and gold mineralization degree. The author considers the boiling of ore solutions as the dominant gold precipitation mechanism and the frequent fracturing and supercritical high temperature and high-pressure nature of the hydrothermal solutions as the main impetus of boiling and circulation, The geological-geochemical features of the 'Rehai' second-order hydrothermal system can correlate with the model of hot spring-type gold deposits and provided a good environment for the formation of this type of gold deposit. The author predict, the possible existence of gold orebodies within 400 m of the surface, with a gold resources of 79 tons.

关 键 词：金 矿化作用 地热 热泉 云南 

分 类 号：P618.510.5[天文地球—矿床学]