豫西主要岩石建造的金丰度  

GOLD ABUNDANCES OF THE MAJOR ROCK ASSEMBLAGES IN WESTERN HENAN

作　　者：陈衍景[1] 富士谷[2] 胡志宏[2] 陈泽铭[2] 严正富[2] 

机构地区：[1]中国科学院地球化学研究所 [2]南京大学地球科学系

出　　处：《地质论评》1993年第1期64-72,共9页Geological Review

基　　金：国家自然科学基金

摘　　要：本文以板块构造理论为指导,简述了豫西不同构造单元的岩石建造划分及性质。根据作者和其他学者1982年后获得较精确的金分析数据,计算了不同岩石建造的金丰度。据不同岩性或岩石建造的金丰度不同,探讨了金丰度的分布规律和部分金矿化机制。揭示出绝大多数岩石建造金丰度低于4.3×10^(-9)的维氏克拉克值。According to the plate tectonic theory,this paper describes the nature and thesubdivision of rock assemblages of different tectonic provines in Western Henan.The gold abundances of the different rock assemblages are calculated with a substan-tial amount of precise data obtained by the other geologists and the authors after1982. The variations of the gold abundances and the mechanism of gold mineraliza-tion are discussed by studying the differences among the gold abundances of rocksor rock assemblages. It is discovered that most of the gold abundances of the majorrock aseemblages in Western Henan are lower than 4.3×10^(-9)which was recommendedas Clark value by Vinogladov(1962).

关 键 词：金 丰度 金矿床 岩石建造 

分 类 号：P618.510.2[天文地球—矿床学]