冈底斯东段成矿带钼铜多金属矿床成矿亚系列研究  

Study on Metallogenic Subseries of Molybdenum Copper Polymetallic Deposit in the Eastern Gangdese Metallogenic Belt

作　　者：王岩 王海桥 周彬 WANG Yan;WANG Haiqiao;ZHOU Bin(China-Shanxi Nuclear Industry Group 218 Brigade Co.,Ltd.,Xi'an 710100,China)

机构地区：[1]中陕核工业集团二一八大队有限公司,西安710100

出　　处：《能源研究与管理》2018年第4期45-47,共3页Energy Research and Management

摘　　要：冈底斯成矿带经历的地质演化过程极为复杂,并由此产生了一系列规模巨大的多金属成矿带,其中以超大型的钼铜多金属矿为特色。采用地史与构造方法对冈底斯成矿带东段的地球动力学成因进行了梳理,并通过LA-ICP-MS锆石U-Pb年代学测定及^(40)Ar-^(39)Ar同位素定年方法对沙让钼矿的成矿机制进行了分析。结果表明,冈底斯东段发生的5期钼成矿事件均与燕山晚期的酸性岩浆活动和喜山早期的中酸性岩浆侵入有关。Due to the complex processed of geological evolution in the Gangdese metallogenic belt,it was formed a series of large scale polymetallic metallogenic belts,and among of them are super-large molybdenum-copper polymetallic deposits.This study were used geological history and tectonic method to discussed the geodynamic formation of the east part of the Gangdese metallogenic belt,also discussed the metallogenic mechanism of Sharang molybdenum deposit by using LA-ICP-MS zircon U-Pb chronology and 40Ar-39Ar isotope chronology dating method.The resulted showed that 5 stages molybdenum mineralization events were occurred in the eastern part of Gangdese,which were related to the acidic magmatism of Late Yanshan and the intermediate-acidic magmatism of Early Xishan.

关 键 词：冈底斯东段 成矿带 沙让钼矿 成矿系列 

分 类 号：P618.4[天文地球—矿床学]