冈底斯构造带花岗岩型铀矿成矿条件分析  

Ore-forming Conditions of Granite Type Uranium Deposits in the Gangdisê Tectonic Belt

作　　者：王四利 赵宝光 王勤 杜小林 何涛 孙悦 

机构地区：[1]核工业二八〇研究所,四川广汉618300

出　　处：《四川地质学报》2012年第2期156-160,共5页Acta Geologica Sichuan

摘　　要：位于班公湖—怒江和雅鲁藏布江两条巨型板块结合带之间的冈底斯构造带,是一个经历了晚古生代—中生代复杂构造演化的碰撞造山带。复杂的构造演化控制着该区的岩浆岩演化,花岗岩极为发育,成因类型复杂。与铀成矿作用密切相关的"S"型花岗岩的分布受构造演化阶段的控制,主要为燕山晚期—喜山期构造—岩浆的产物,此类花岗岩较其它成因类型花岗岩铀含量高,具有较好的形成花岗岩型铀矿的成矿条件。The Gangdis6 tectonic belt located between the Bangong Co-Nujiang and Yarlung Zangbo plate junction is a collision orogenic belt that underwent complicated tectonomagmatic evolution from Late Paleozoic Era to Mesozoic Era with ocean-continent during D--T2, basin-mountain during T3--K and crust-mantle during E--Q. The S-type granite correlated closely with uranium mineralization is controlled by tectonic and was emplaced during Late Yanshanian-Himalayan epoch. The granite is characterized by enrichment in uranium.

关 键 词：铀矿 花岗岩 成矿条件 冈底斯构造带 

分 类 号：P619.14[天文地球—矿床学]