CAJ | 학술논문

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。
통과계통상실적야외지질조사,대길림교하지구전인화분적전진암체진행료상세연구,결합암석학、암석화학등특정,학정해암체암석류형위중립-중세립이장화강암。채용LA-ICPMS고석U-Pb방법획취해암체이장화강암적침위년령위（205±5.0）Ma,여길림대학손덕유교수주삼도하감장화강암암체동위소년령（216±3）Ma기본상당;동시작자상세연구료길중-돈화지구목광성광작용,학정해기화강암여목광성광작용무관。
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.