The Liwutype copper deposit refers to stratiform or stratiformlike or lenticular Curich ore deposits occurring in the suture zone between the western margin of the Yangtze block and SongpanGanzi fold belt. Research of geological features, mineralization type and mineralography indicates that the Liwutype copper deposit belongs to hydrothermal deposits. In order to accurately constrain the metallogenic age, we performed NTIMS ReOs geochronological dating for the chalcopyrite from massiveveined ores. The results show isochron ages of chalcopyrites ranging from 1502±49 to 1511±48 Ma (2σ), indicating that the Liwutype copper deposit formed in the Late Jurassic, distinctly later than the sedimentary time of the wall rock (Liwu Group), but roughly close to the age of the granite outcropping at the edge of Jianglang dome. Initial 187Os/188Os value of chalcopyrites is 365±029, suggesting that the oreforming materials came mainly from the continental crust, probably from the Liwu Group. Combined with the tectonicmagmatic events of the dome, this paper proposed that the magmatic thermal uplifting caused by the early Yanshanian extension in the SongpanGanzi fold belt not only provided thermal forces and partial fluids for Cu mineralization, but also led to the formation of oreinducing and orecontaining structure space. Therefore, magmatic thermal uplifting was the key factor of the formation of Liwutype copper deposits.