| 桂东南金银矿床类型成矿规律和找矿方向 |
| |
| 引用本文： | 王正云,汪劲草,尹意求,耿文辉,杨明寿.桂东南金银矿床类型成矿规律和找矿方向[J].南方国土资源,1998(3). |
| |
| 作者姓名： | 王正云 汪劲草 尹意求 耿文辉 杨明寿 |
| |
| 作者单位： | 中国有色金属工业总公司矿产地质研究院 |
| |
| 基金项目： | “八五”期间国家重点黄金科技攻关项目 |
| |
| 摘 要： | 文章重新厘定了桂东南原定为“寒武系”地层的时代，确立了海西期云开变质核杂岩体结构；提出本区金银矿床分为混合岩化—岩浆热液型和变质—岩浆热液型的成因类型，建立了金银矿床成矿模式，即地槽发展时期形成矿源层，变质—混合岩化作用促进金银组分活化迁移与初始富集，剥离作用使金银组分再次迁移富集，燕山期构造—岩浆作用成矿，指出找矿重点为云开隆起区外侧及边部断裂带。
|
| 关 键 词： | 金银矿床 剥离断层 矿源层 成矿规律 成矿模式 桂东南 |
ORE-FORMING LAW AND PROSPECTING AREA OF TYPES OF Au-Ag DEPOSITS IN SOUTHEASTERN GUANGXI |
| |
| Authors: | Wang Zhengyun Wang Jingcao Yin Yiqiu Geng Wenhui & Yang Mingshou |
| |
| Abstract: | In the paper, the authors have redetermined the times of the formerly-decided Cambrian strata in Southeastern Guangxi, defined the texture of complex rock body of metamorphic core at Yunkai at Hercynian stage, proposed that the Au-Ag deposits in this area are divided in genesis into migmatization-magmatic hydrothermal type and metamorphic-magmatic hydrothermal type and metamorphic-magmatic hydrothermal type, set up mineralization model which reveals that the source beds of Au-Ag deposits was formed in geosynclinal development stage, metamorphism-migmatization stimulated the remobilization and preliminary enrichment of Au-Ag components, erosional truncation made Au-Ag components remigrate and enrich and finally the Au-Ag deposits were produced in the Yanshanian structural-magmatism. They have also put out the outside and marginal faults of Yunkai upwarping area as the Au-Ag prospecting area. |
| |
| Keywords: | Au-Ag deposit erosion fault source bed ore-forming law mineralization model Southeastern Guangxi |
| 本文献已被 CNKI 等数据库收录！ |
