中文摘要：

延边天宝山为一座大型中高温热液多金属（铅,锌,铜,钼等）矿床,由新兴铅锌、立山铅锌铜和东风铅锌铜钼3个中型矿床所组成,研究采用单矿物流体包裹体的40Ar/39Ar激光探针定年法对其含矿石英脉进行了精细的年代学测定以确定该矿床形成时代和成矿流体来源;实验室获得的40Ar/39Ar正反等时线年龄分别为（175±10）Ma和（175±18）Ma;经验证实剔除部分接近大气的成分点和过剩氩的成分点,重新计算的正、反等时线年龄分别为（179±11）Ma和（179.1±9.8）Ma,MSWD分别为0.95和0.99,40Ar/36Ar比值分别为297.8±2.7,297.6±2.5;结合区域地质特征,认为天宝山多金属矿床的成矿应发生在早侏罗世晚期,成矿流体是以岩浆热液为主、少量大气水和地壳流体参与的混合流体。

英文摘要：

The large scale Tianbaoshan hydrothermal polymetallic（lead,zinc,copper,molybdenum） deposit is composed of three medium polymetallic deposits,including the Xinxing lead-zinc deposit,Lishan lead-zinc-copper and the Dongfeng lead-zinc-copper-molybdenum deposit.Ore bearing quartz veins are selected to determine the time and source origin of the ore deposit by means of single mineral fluid inclusion 40Ar/39Ar laser probe dating.It is showed that the quartz veins yield an isochron 40Ar/39Ar age of 175 Ma±10 Ma and an inverse one of（175 ± 18） Ma,respectively.Eliminating some data with superfluous Ar and those close to atmosphere,it reacquired the 40Ar/39Ar age,isochron 40Ar/39Ar age of 179 Ma±11 Ma（MSWD=0.95） and an inverse age of 179.1 Ma±9.8 Ma（MSWD=0.99） with 40Ar/36Ar ratios of（297.8±2.7） and（297.6 ±2.5）,respectively.Combining with previous research,the mineralization time of Tianbaoshan polymetallic deposit is the late period of the Early Jurassic,and the mineralization fluid is a kind of mixed fluid with major magmatic hydrothermal fluid,with minor atmospheric water and crustal fluids.