Source and location mechanism for lode gold deposits hosted in metamorphic rocks in northeastern Hunan, China

作     者：LIU Liang ming,PENG Sheng lin,YANG Qun zhou (College of Resources, Environment and Civil Engineering, Central South University, Changsha 410083, China) 

作者机构：College of Resources Environment and Civil Engineering Central South University Changsha China 

出 版 物：《Journal of Central South University of Technology》 (中南工业大学学报（英文版）)

年 卷 期：2001年第8卷第2期

页      面：108-113页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：TheDoctoralFoundofMinistryofEducationofChina(No .980 5 330 2 ) FoundationofUniversityKeyTeacherofMinistryofEducationofChina 

主　　题：lode gold deposit location fluid focus seismic pump northeastern Hunan 

摘      要：For understanding the source and location mechanism of lode gold deposits hosted in metamorphic rocks in northeastern Hunan, the authors analyzed the REE (rare earth elements) in ores and their host rocks, metallogenic elements in host rocks near and distant from the ore bodies, and characteristics of ore controlling structures, and deduced their genetic implication. Their geochemical features of REE and metallogenic elements suggest that they are formed by mobilization of dispersed metallogenic materials in Lengjiaxi Group of Middle Proterozoic during deformation and metamorphism process, mainly in Wulingian period. From the attributes of ore controlling structures and regularity of location of gold metallization, it is concluded that the location of gold deposits is closely related to reverse shearing. Ore forming fluids are focused on the secondary faults and extension fractures of reverse shear zones of nearly EW strike by stress driven diffusion and seismic pumping.