江西城门山铜多金属矿岩浆侵位机制与成矿关系探讨  

Discussion on magma emplacement of Chengmenshan Cu polymetallic ore deposit and its relation to the metallogenic process

作　　者：许红光 尹昭君 

机构地区：[1]江西省核工业地质局二六八大队,江西玉山334700

出　　处：《地质找矿论丛》2017年第3期385-390,共6页Contributions to Geology and Mineral Resources Research

摘　　要：城门山铜矿自二十世纪50年代发现以来,经过多年工作已被证实为一个大型的"三位一体"的铜多金属矿床,成矿与区内花岗闪长斑岩、石英斑岩有关。文章通过以往资料和实地工作成果研究,认为矿区内花岗闪长斑岩和石英斑岩二者存在演化关系,且两种岩浆的侵位机制的不同导致了其成岩时代、成矿专属性的不同。在没有经过演化分异之前的原始岩浆可能首先被九瑞地区的基底隆起运动抬升,后期花岗闪长斑岩岩浆从原始岩浆中分异出来并继续被抬升,形成被动侵位,并发生了中低温成矿元素和中高温成矿元素的运移和富集,形成与花岗闪长斑岩有关的铜、锌、金矿床;随后的构造运动叠加作用,使矿区断裂构造与剩余的石英斑岩岩浆联通,造成了其主动侵位,从而形成与石英斑岩有关的钼矿床。Since discovery of Chengmenshan ore deposit in fifties last century it has been prove a large＂three combination to one＂Cu polymetallic deposit.Metallogenetically,it is related to gransdioritic porphyry and quartz porphyry.Based on the previous data and working result on the spot show that the gransdioritic porphyry and quartz porphyry are related in their evolution and their emplacement mechanism differ from each other and differ in their rock-forming time and netallogenic attributes.The primitive magma before evolution and differentiation may have been uplifted by basement dome in Jiurui area and in the late stage the gransdioritic porphyry was differentiated and was uplifted again and its passive emplacement and meso-epithermal and meso-high temperature ore elements motivation and enrichment occurred as Cu,Zn and Au deposits then followed the tectonic overprinting which resulted in connection of the faults to the residual magma and the the active emplacement and related Mo deposit associated with the quartz porphyry.

关 键 词：城门山铜矿 演化 侵位 成矿 江西省 

分 类 号：P618.41[天文地球—矿床学] P618.41[天文地球—地质学]