宁中白云母二长花岗岩SHRIMP锆石U-Pb年龄及岩石地球化学特征.pdf

1000~569/2006/022(03、-0643-52 ActaPetrologicaSinica岩石学报宁中白云母二长花岗岩SHRIMP锆石U·Pb年龄及岩石地球化学特征刘琦胜江万简平叶培盛吴珍汉胡道功 UUQiSheng,JIANGWan,JIANPing,YEPeiSheng,WUZhenHanandHUDa0G0ng ,北京 100081 ,北京 100037 ~ofGeomechanics,ChineseAcademyofGeologicalSciences,Beijing100081,China ~r,Beijing100037,China 2005—12-01收稿,2006-02—15改回. LiuQS,JiangW,JianP,YePS,-Pbageandpetrochemicalandgeochemical featuresofMesozoicmuscovitemonzoniticgraniteatNingzhong,,22(3):643-652 Abstract —mica —Pbdatingforrepresentativesamplesdefinesacrystallizationagerangingfrom190±8Mato 1934- ,(%~%)andK,O(%%),withratioof CaO/N%0(—)K(~), anomaly(8Eu=~)=4l0x10一。一737x10一。andSr=-。. Ba=-6~127x10 / Sr=1 150900~=0511879~ ofanuppercrustsour