内蒙古哈达门沟石英正长岩锆石SHRIMP年龄及其地质意义.docAdvancesinGeosciences地球科学前沿,2013,3^42-47 HsrtShttp://dx./.31007PublishedOnlineFebruary2013(rnal/)SHRIMPU-PbZirconAgeandItsImplicationsofQuartzSyeniteinHadamengou,InnerMongolia*KangxuRen,GuohanYan9JianhuiCai,TianrenZou,BaoleiMu,FengtangLi]1・2# 2 3 4 2 2ResearchInstituteofPetroleumExplorationandDevelopment,PetroChina,Beijing'SchoolofEarthandSpaceSciences,PekingUniversity,Beijing'InstituteofMineralResources,ChineseAcademyofGeologicalSciences,Beijing^InstituteofGeology,ChineseAcademyofGeologicalSciences,BeijingEmail:******@Received:,2012;revised:,2012;accepted:,2012th th thAbstract:BasedondatingzirconTIMSandSHRIMPU・Pbagesfortheore-controllingquartzsyeniteofHadamengoulargegolddeposit,InnerMongolia,theauthorsconfirmedthatthequartzsyeniteintrudeduponduringtheearlyofPa-leoproterozoic・ItszirconSHRIMPU-Pbconcordantpointagewas(2483±10)Ma(1o)andtheupperintersectionagegived(2508±41)Ma(lo)ordinglinerespective!--richin・trusiverockhadimportanttectonicsignificance・ItrevealedthataftertheamalgamationattheendperiodofArchean,thecrustofNorthChinaCratonhadreachedsomethicknessandhadtransformedintoakindofextensionaltectonicsettingssincetheintrusionofthealkali-:TIMS;SHRIMP;ZirconU-PbA
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