青海东草河地区铀多金属矿地质特征及找矿标志分析

摘要

The Eastern River Area uranium Polymetallic ore is located in North Qilian neoproterozoic - Early Paleozoic suture zone. The region has undergone many tectonic movements. Uranium mineralization is closely related to uranium-bearing construction,including metamorphism,mixed lithology,magmatic activity and tectonic evolution. The main areas of the region are outcrop-deep metamorphic rock,including Paleozoic sea-land cross clastic rocks,volcanic rocks,Mesozoic sea -land intersection,fluvial facies clastic rock and Cenozoic River in alluvial facies clastic rock. The structure of north-east,or the place of north -north -east and near -eastern structure is developed. The magma activity in the region is strong. There is few from the base-acid.%青海东草河地区铀多金属矿位于北祁连新元古代—早古生代缝合带.该区域经历了多次构造运动,铀矿化与含铀建造、变质作用、混合岩化、岩浆活动及构造演化密切相关.区域上主要出露元古界中—深变质岩,古生界海陆交互相碎屑岩、火山岩,中生界海陆交互相、河流相碎屑岩及新生界河流洪冲积相碎屑岩等.构造以北西向为主,北东、北北东及近东西向次级构造发育.区内岩浆活动强烈,从基性—酸性均有出露.