戴云山构造带成矿地质特征

戴云山构造带的断裂活动、岩浆活动及火山作用强烈,不同期次的岩浆侵入和火山活动对Au、Ag、Cu、Pb、Zn矿床的形成起着一定的控制作用.元古界变质基底和上古生界在火山岩中呈"天窗"出露.戴云山构造带内主要有层间破碎带蚀变岩型金矿床、沉积变质-热液叠加改造型铅锌银矿床、接触交代型矿床、斑岩型铜(钼)矿床、火山热液型矿床.研究表明:晋宁-加里东期是该区最重要的成矿期,燕山晚期为另一重要成矿期.区域断裂、褶皱构造、构造界面以及2组构造的交汇都对矿床的产出起着重要的控制作用.

Geological Characteristics of Mineralization in Daiyun Mountains Structure Belt

Fracture,magma activity and volcanism in Daiyun mountains structure belt are very intensive. Magma invading and volcanism of different period controled the metallogen of Au,Ag,Cu,Pb and Zn deposits. The metamorphose fundation of the Proterozoic and the stratum of the Late Palaeozoic exposed as "top window" to the lava. Research confirmed that the Jingningian-Caledonia period is the most important mineralization period, and the late Yanshanian is another important period. Mineral deposits in Daiyun mountains structure belt are mainly;the interlayer fractured zone alteration type Au deposit,the sedimentary metamorphose-hydrothermal superimposed rebuilt type lead zinc silver deposit,contact metamorphic deposit, volcanic hydrothermal solution type deposit and prophyry type Cu deposit. Regeion fracture, fold, structure interface and the interjunction of two fractures controled the metallogenic position.