%0 Journal Article
%T Morphology,ChemistryandU-PbGeochronologyofZirconGrainsInQuartzMonzodioritefromtheSunzhuangArea,FanshiCounty,ShanxiProvince
%A SONG
%A Jiye
%A *LI
%A Shengrong
%A QIN
%A Mingkuan
%A CAI
%A Yuqi
%A LUO
%A Junyan
%A ZHANG
%A Juquan
%A LI
%A Chenglu
%A and
%A SANTOSH
%A M.
%J µØÖÊѧ±¨
%P 1176-1188
%D 2015
%X Themorphology,REEgeochemistryandU-PbgeochronologyofzirconsfromquartzmonzodioriteintheSunzhuangarea,FanshiCounty,ShanxiProvincearepresentedinthisstudy.Thezirconcrystalscanbeclassifiedintofourmaintypesas:AB,L,SandP,and24subtypessuchasAB4,AB5,L5,andS3.Themaximumcrystallizationtemperatureofzirconwasestimatedas850¡ãC,withtheminimumof550¡ãC.Thepeaktemperaturesofthezirconcrystallizationrangefrom650¡ãCto700¡ãC.TheabundancesofThandUinthezircongrainsshowlargevariationwiththeTh/Uvalues>0.4.TheThandUvaluesalsoshowapositivecorrelationinmostzircons.TheREEabundanceofzirconinthequartzmonzodioriterangesfrom280.4ppmto2143ppmwithanaverageof856.4ppm.ThechondritenormalizedzirconREEpatternsshowtwotypes,oneischaracterizedbyHREEenrichmentandLREEdepletionwithpositiveCe-anomalyandnegativeEu-anomalywhereastheotherisHREEenrichedandLREEdepletedwithnegativeEu-anomalybutwithoutpositiveCe-anomaly,andrelativelyflatpatterns.TheLA-ICP-MSU-Pbgeochronologyonthezirconsyieldsameanageof133¡À0.87Ma.Ourdataonzirconmorphology,compositionandU-PbgeochronologyrevealthattheparentmagmaofthequartzmonzodioritewhichwasemplacedduringlateYanshanianhadamixedcrust-mantlesource,withcrustalcomponentsdominating.Themagmaisinferredtohavebeenwaterrichandalkalinewithinitialhighoxygenfugacity.Post-magmatichydrothermalactivityoccurredunderrelativelyreducingconditionswhichwasconductiveforgoldprecipitationintheYixingzhaigolddeposit.
%K Zircontypomorphism
%K U-Pbgeochronology
%K quartzmonzodirite
%K Yixingzhaigolddeposit
%K Shanxi
%U http://www.geojournals.cn/dzxb/ch/reader/view_abstract.aspx?file_no=201504009&flag=1