蛟河地区前进岩体锆石U-Pb年龄及其与吉中-延边地区钼矿成矿作用的关系  

Qianjin rock body zircon U-Pb ages of Jiaohe region to the molybdenum mineralization of central part of Jilin Province-Yanbian region

作　　者：邸新[1] 毕小刚[1] 贾海明[1] 李栋[1] 

机构地区：[1]吉林省区域地质矿产调查所,吉林长春130022

出　　处：《吉林地质》2011年第4期25-28,共4页Jilin Geology

基　　金：吉林省科技发展计划项目:吉林省中东部地区钼矿与岩浆作用研究(20080455号)

摘　　要：通过系统翔实的野外地质调查,对吉林蛟河地区前人划分的前进岩体进行了详细研究,结合岩石学、岩石化学等特征,确定该岩体岩石类型为中粒-中细粒二长花岗岩。采用LA-ICPMS锆石U-Pb方法获取该岩体二长花岗岩的侵位年龄为(205±5.0)Ma,与吉林大学孙德有教授做三道河碱长花岗岩岩体同位素年龄(216±3)Ma基本相当;同时作者详细研究了吉中-敦化地区钼矿成矿作用,确定该期花岗岩与钼矿成矿作用无关。Though detailed,systematic geological survey in filed,detailed studied the Qianjin rock body of the previous division of Jilin Jiaohe region,combined with petrological,lithogeochemical characteristics to determine the rock type（medium-grained-fine adamellite）.Using LA-ICPMS zircon U-Pb method to get the adamellite emplacement age of 205 ± 5.0Ma,being roughly equal to Jilin University Professor Sun De-you Sandaohe alkali-feldspar granite isotopic age（216 ± 3Ma）;meanwhile,the authors detailed studied molybdenum mineralization of central part of Jilin Province-Yanbian region,and determined that the granites and molybdenum mineralization have nothing to do.

关 键 词：前进岩体 锆石U-PB定年 钼矿成矿作用 

分 类 号：P588.121[天文地球—岩石学]