西藏帮浦多金属矿床的地球化学特征分析  

Geochemical characteristics of the Bangpu polymetallic deposit in Tibet

作　　者：马平[1,2] 郑有业[2,3] 高顺宝[2,3] MA Ping;ZHENG You-ye;GAO Shun-bao(Hubei Vocational College of land and resources,Wuhan 430090,China;School of resources,China University of Geosciences(Wuhan),Wuhan 430074,China;Institute of geological survey,China University of Geosciences(Wuhan),Wuhan 430074,China)

机构地区：[1]湖北国土资源职业学院,湖北武汉430090 [2]中国地质大学(武汉)资源学院,湖北武汉430074 [3]中国地质大学(武汉)地质调查研究院,湖北武汉430074

出　　处：《世界有色金属》2021年第9期181-182,共2页World Nonferrous Metals

摘　　要：帮浦多金属矿床位于冈底斯成矿带的东段。产于在冈底斯花岗岩基北侧弧后盆地范围内,发育一条以铜铅锌多金属矿化为主的矿化带,夹持于雅鲁藏布江缝合带与斑公湖-怒江缝合带之间。对帮浦多金属矿进行了LA-ICP-MS和Re-Os同位素地球化学研究,帮浦矿区内矿物的同位素测年为69Ma,成矿年龄介于晚白垩世—古新世(85Ma~50Ma)。The Bangpu polymetallic deposit is located in the eastern part of Gangdise metallogenic belt.It occurs in the back arc basin on the north side of Gangdise granite batholith,and develops a mineralization belt dominated by Cu Pb Zn polymetallic mineralization,sandwiched between the Yarlung Zangbo Suture Zone and the Bangong Lake Nujiang suture zone.LA-ICP-MS and Re Os isotopic geochemistry of the polymetallic deposits in the area were studied.The isotopic age of the minerals in the area is 69 Ma,and the mineralization age is between 85 Ma and 50 MA in the late Cretaceous Paleocene.

关 键 词：矿石Re-Os同位素测年 微量元素 地球化学 铅锌矿床 西藏 

分 类 号：P618.2[天文地球—矿床学]