简介：TherearelargevolumesofthePhanerozoicgranitoidrocksinChinaandneighboringareas.Inrecentyears,numerousnewandpreciseU-Pbzirconageshavebeenpublishedforthesegranitoids,anddefinemanyimportantmagmaticevents,suchasca.500MagranitoideventsintheWestJunggar,AltaiorogensintheNWChina,andQinlingorogeninthecentralChina.TheseagesaccuratelyconstrainthetimeofimportantearlyPaleozoic,latePaleozoic,earlyMesozoicandlateMesozoicmagmaticeventsofthenorthern,central,western,southernandeasternorogenicMountainsinChina.ThereoccurvarioustypesofgranitoidsinChina,suchastalc-alkalinegranite,alkaligranite,highly-fractionatedgranite,leucogranite,adakite,andrapakivigranite.RapakivigranitesarenotonlytypicalProterozoicasintheNorthChinaCraton,butwerealsoemplacedduringPaleozoicandMesozoicintheKunlun-Qinlingorogen,apartoftheChinaCentralOrogenicBelt(CCOB).Nd-HfisotopictracingandmappingshowthatgranitoidsinthesouthernCentralAsianOrogenicBelt(CAOB)inChina(ortheNorthernChinaOrogenicBelt)arecharacterizedpredominantlybyjuvenilesources.Thejuvenilecrustinthisorogenicdomainaccountsforover50%byarea,distinguishingitfromotherorogenicbeltsintheworld,andthoseincentral(e.g.,Qinling),southwestemandeasternChina.Basedonalargeamountofnewagedata,apreliminarygranitoidandgranitoid-tectonicmapsofChinahavebeenpreliminarilycompiled,andanevolutionaryframeworkofPhanerozoicgranitoidsinChinaandneighboringareashasbeenestablishedfromtheviewofassemblyandbreakupofcontinentalblocks.Researchideasongranitoidtectonicshasalsobeenproposedanddiscussed.

简介：SomeAudepositsinsouthernAnhuiProvincehaverecentlybeenfoundtobecloselyassociatedwithLateMesozoicintrusions.TypicalexamplesincludetheHua-shahAu（Sb）depositandAudepositsatZhaojialing,Wuxi,andLiaojia.InordertounderstandthemechanismsthatledtheformationoftheseAudeposits,wemakedetailedreviewsonthegeologicalcharacteristicsoftheseAudeposits.Specifically,wepresentnewLA-ICP-MSzirconU-Pbdating,alongwithelementalandHfisotopicdatafromtheHuashanAu（Sb）deposit.OurdatasuggeststhattheHuashanore-relatedintrusionswereemplacedduringtheLateJurassicandEarlyCretaceousperiods（144-148Ma）.Theyarecharacterizedbyarc-magmafea-turesandhighoxygenfugacityandarerichininheritedzircons.ZirconU-PbagesandLu-HfisotopesfromintrusionssuggestthatProterozoicjuvenilelithosphereisthemainsourceoftheseintrusions.TheregionalgeologicalhistoryimpliesthatlithospherebeneathsouthernAnhuiwasproducedduringaProterozoicsubductionandwasfertilizedwithAu（Cu）intheprocess.Integratedwiththeresultsofpreviousstudies,weinferredthatLateMesozoicintrusionsformedbytheremeltingofthelithospherecouldprovidethemetalendowmentfortheAu-richdepositsinsouthernAnhui.