摘要
青海省泽库县尼马龙卡花岗闪长岩体是同仁—泽库构造岩浆岩带上的一个小型岩株,该岩浆岩带是重要的热液型多金属矿成矿带。近年来在该岩体中发现了多条钨矿体,文章利用LA-ICP-MS技术测定了尼马龙卡花岗闪长岩体的锆石U-Pb年龄为(229. 8±1. 1) Ma,证实该岩体形成于晚三叠世,结合地质、物化探、遥感异常、成矿特征。还发现该地区花岗闪长岩作为成矿母岩,受岩浆期后热液及北东向断层的双重作用,形成了石英脉型钨矿。
Nimalongka granodiorite rock is a small rock stock located in the Tongren-Zeku magmatic structural belt. The magmatic rock belt is an important metallogenic belt and is more favorable to hydrothermal polymetallic mineralization. Many scheelite quartz veins were found in the rock in recent years. According to the NIMA roncador granodiorite rock＇s zircon U-Pb ages tested by LA-ICP-MS technique,we not only confirmed that the main rock body is belong to Indosinian（ 229.8±1.1） Ma,but also concluded that the granodiorite as the ore-forming mother rock in this area was influenced by magmatic hydrothermal and North East fault role in which a scheelite quartz vein type deposit formed.
作者
严琼
郑崔勇
石建国
艾昊
YAN Qiong;ZHENG Cui-yong;SHI Jian-guo;AI Hao(Northwest Nonferrous Metals Geological Exploration Bureau,Team 711,Hanzhong 723000;Shanxi Fashion Engineering University,Xi＇an 712046)
出处
《矿产勘查》
2018年第6期1058-1064,共7页
Mineral Exploration
基金
中国地质调查局矿产调查评价项目(编号:12120114003101)资助
