摘要
大兴安岭及其邻区分布着许多规模较大的花岗岩体 ,不同时期的侵入岩其空间分布具有明显的分区性。华力西期花岗岩体的分带性最明显。区内侵入岩受断裂构造控制 ,因而不同期次的花岗岩类多按一定方向呈线状或串珠状展布 ,构成不同岩类的线形岩带。同源不同期的花岗闪长岩和花岗闪长斑岩与成矿关系密切 ,花岗闪长岩浆活动及其同期的喷出岩浆活动使矿区构成了一个低压多变的岩浆系统 ,岩浆房从围岩中抽进H2 O和溶解于其中的矿化剂与金属等 。
Great Xinganling and its adjacency is an important copper multiple metal metallogenic belt and intrusive rocks develop well in the region which consist mainly of granodiorite, plagio granite as well as quartz diorite and formed during the middle Caledonian, middle Variscan late, Variscan and early Yanshanian cycle. The granitic rocks closely related to copper multiple mineralization are controlled by faults and show the characteristics of obvious zonal distribution.
出处
《华南地质与矿产》
CAS
2001年第4期11-15,21,共6页
Geology and Mineral Resources of South China
