AdvancesinGeosciences地球科学前沿,2012,2,131-137HSrtShtlp://dx.doi.org/10.12677/ag.2012.23019PublishedOnlineSeptember2012(http://www.hanspub.org/journal/ag.html)U-PbZirconDatingoftheMesozoicWeldedPyroclasticsintheQG2WellandItsGeologicalSignificanceBairongSong,HongdouHan9PengchaoGuoExplorationandDevelopmentResearchInstitute,LiaoheCo.ltd..Petrochina,PanjinEmail:songbr@petrochina.com.cnReceived:Ju...