摘要
白银矿田的成岩成矿环境为早—中寒武世北祁连裂谷 ;白银矿田的火山喷发旋回由早→晚为细碧岩—角斑岩—石英角斑岩 ,含矿火山岩地层为石英斑岩类的石英角斑凝灰岩 ,层位控制明显 ;成矿物质主要来源于上地幔 ;成岩温度 850°— 1 1 50℃ 。
The petrogenetic and metallogenic environments of Baiyin orefield are north Oilian mountains rift in early-middle Cambrian. The volcanic eruption cycles is spilite-keratophyre-quartz keratophyre series. Quartz keratophyre tuff is the volcanic mineral-bearing formation, and controlled obveriously. Metallogenic matters derived from upper mantle. Petrogenetic temperatures are 850°-1150℃. Metallogenic temperatures range from high tempretures to middle tempretures.
出处
《西南工学院学报》
2001年第1期42-48,共7页
Journal of Southwest China Institute of Technology
基金
国家"九五"科技攻关项目!(96- 914- 0 3- 0 3- 3)资助
