摘要
广东省高要市某铜矿区在区域构造上位于云开大山加里东期隆起带的东北部,吴川~四会深大断裂变质带的北东段,石牛头花岗岩体的西侧外接触带上,成矿作用明显受构造运动和岩浆活动控制。区内主要有两个较大的岩体,即石牛头岩体和伍村岩体。本文主要介绍了该铜矿床的成矿地质背景及矿床地质特征,分析、探讨了成矿地质条件,认为本区矿床是受继承性的沿花岗斑岩脉分布的韧(脆)性剪切构造带控制,特别是剪切应变作用强烈部位(超糜棱岩),在叠加有脆性破裂面的地方,往往是成矿比较有利的地段。本矿区矿床成因受构造和岩浆活动控制,成因类型应属岩浆热液类型中的混合岩化-重熔岩浆热液亚类。
A copper mining area in Gaoyao city,Guangdong Province,is located in the northeast of the Gary East uplift zone of Yunkai Mountain,the northeast of the Sihui deep fault metamorphism zone in Wuchuan,and the lateral contact zone on the west side of the Shiniutou granite body,the mineralization is obviously controlled by tectonic movement and magmatic activity.There are two large rock masses in the area,namely,Shiniutou rock mass and Wucun rock mass.This paper mainly introduces the ore-forming geological background and geological characteristics of the copper deposit,analyzes and discusses the ore-forming geological conditions,and holds that the deposit is controlled by the inherited ductile(Brittle)shear zone distributed along the granite porphyry vein,especially where the shear strain is strong(ultramylonite),where the brittle fracture surface is superimposed,the ore-forming area is usually favorable.The Genesis of the deposit is controlled by structure and magmatic activity,and belongs to the migmatization-remelting Magmatic Hydrothermal Subclass of Magmatic Hydrothermal type.
作者
余小俭
YU Xiao-jian(The fifth Geological Brigade of Geological Bureau of Guangdong Province,Zhaoqing 526020,China)
出处
《世界有色金属》
2020年第13期98-99,共2页
World Nonferrous Metals
关键词
粤西成矿带
铜矿
超糜棱岩
成矿条件
Western Guangdong Metallogenic Belt
Copper Deposit
ultramylonite
metallogenic conditions