摘要
金沙江缝合带的洋 -陆转换 (洋盆扩张、洋壳俯冲、洋盆闭合 )作用 ,在羊拉地区引发了 3期构造—岩浆事件 ,分别形成海西期裂谷洋盆洋脊 -洋岛型火山岩、印支期陆缘弧同熔型花岗岩和燕山期同造山碰撞型花岗斑岩 ,与其对应的成矿系列为 :海西期海底喷流 -热水沉积型铜矿床。
There are three stages of tectonomagmatic event in the Yangla region,Yunnan Province,including ocean-ridge and ocean-island volcanic rocks of Hercynian in Jinshajiang rift-oceanic basin and syntectic granite of Indosinian and synorogenic granite porphyry of Yanshanian,which could have been caused his ocean-continent transfer(oceanic basin spreading and oceanic crust subduction and oceanic basin closeness) of Jinshajiang suture zone. The corresponding types of deposit in every stage of the tectonomagmatic activities, are classified into eruption-sedimentation type, skarn type and porphyry type.
出处
《地质科技情报》
CAS
CSCD
北大核心
2004年第2期21-24,共4页
Geological Science and Technology Information
基金
原地质矿产部定向基金项目"滇西德钦羊拉地区铜矿成矿条件及远景预测"(地科定 95 -12 )
原地质矿产部"九五"科技攻关项目"金沙江结合带构造演化及铜
金矿成矿规律研究"( 95 -0 2 -0 0 1-0 3 )
关键词
成矿系列
羊拉铜矿
云南
minerogenetic series
Yangla copper ore
Yunnan Province
