吉林省敦化市意气松一带花岗岩锆石LA-ICP-MS U-Pb定年及地质意义  

Zircon LA-ICP-MS U-Pb dating and geological significance of granitoids in Yiqisong area, Jilin Province

作　　者：彭锐[1] 顾军[1] 赵志兵[1] 陈浩[1] 张艳昌[1] PENG Rui;GU Jun;ZHAO Zhi-bing;CHEN Hao;ZHANG Yan-chang(Team 604,Bureau of Nonferrous Metals Geological Survey of Jilin Province,Jilin 132013,Jilin,China)

机构地区：[1]吉林省有色金属地质勘查局604队,吉林吉林132013

出　　处：《吉林地质》2018年第3期1-4,共4页Jilin Geology

摘　　要：吉林省敦化市意气松一带花岗岩的岩石类型为花岗闪长岩、黑云母二长花岗岩,两者呈渐变过渡关系,花岗闪长岩的U-Pb测年结果为187Ma,为早侏罗世的产物;黑云母二长花岗岩的U-Pb测年结果为215Ma,为晚三叠世的产物。通过花岗岩的锆石U-Pb定年数据,结合地质特征,将其划分为两个独立岩石单元。Type of the Yiqisong granite is granodiorite and biotite adamellite, the relationship between them was, U-Pb dating results of granodiorite is 187Ma,it is the product of early Jurassic; U-Pb dating results of biotite adamellite is 215Ma, it is the product of late Triassic epoch. According to the data of Zircon U-Pb dating and the geological characteristics, that divided it into twice individual granite units.

关 键 词：LA-ICP-MS U-PB定年 意气松花岗岩 

分 类 号：P618.85[天文地球—矿床学]