熊耳群火山岩系金银多金属矿床热水成矿作用  

Hydrothermal mineralization of Au (Ag)-polymetallic ore deposit in the volcanic rock series of the Xiong'er Group

作　　者：张汉成[1] 肖荣阁[1] 安国英[1] 张龙[1] 侯万荣[1] 费虹彩[1] 

机构地区：[1]中国地质大学地球科学学院,北京100083

出　　处：《中国地质》2003年第4期400-405,共6页Geology in China

基　　金：国家自然科学基金(40073013);国土资源部国际合作与科技司自由探索项目(2000440)资助。

摘　　要：在华北板块南缘熊耳群火山岩系地层内部,已发现金、银多金属矿床多处,但对其成因机制的解释,不同学者往往存在不同认识。笔者通过对已知矿床产出地质特征、成矿热水流体特征和来源以及矿化、蚀变围岩系统研究后提出熊耳期后火山热液是控制金、银多金属矿床形成的主要因素,成矿作用以热水流体的沉积、充填作用为主,主成矿期应为熊耳群火山活动后期等新认识。Many Au (Ag)-polymetallic ore deposits have been discovered in the volcanic rock series of the Xiong'er Group on the south margin of the North China plate. However, there are many different explainations for the genetic mechanism of these deposits. Based on a systematic study of the geological characteristics of these deposits, features and genesis of hydrothermal ore fluids, mineralized and alterated host rocks, the authors propose the new views that the volcanic hydrothermal fluids after the Xiong'er volcanic activity is the main factor controlling the formation of the Au (Ag)-polymetallic ore deposits, and that the major ore-forming processes are depostion and cavity filling of hydrothermal fluids. In addition, the authors also suggest that the main mineralization stage is the late phase of the Xiong'er volcanic activity.

关 键 词：熊耳群 火山岩系 裂谷 热水流体 成矿作用 

分 类 号：P618.5[天文地球—矿床学] P611[天文地球—地质学]