浙江绍兴地区广山花岗杂岩体的锆石_省略_素_岩石地球化学特征及其地质意义_贾德龙

《浙江绍兴地区广山花岗杂岩体的锆石_省略_素_岩石地球化学特征及其地质意义_贾德龙》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、1000-0569/2013/029(12)-4087-03ActaPetrologicaSinica岩石学报浙江绍兴地区广山花岗杂岩体的锆石U-Pb年代学、*锆石Hf同位素、岩石地球化学特征及其地质意义1，2，32，3＊＊2，32，32，3114贾德龙严光生叶天竺庞振山李永胜贺鹏飞姚磊刘鹏1，2，32，3＊＊2，32，32，3114JIADeLong，YANGuangSheng，YETianZhu，PANGZhenShan，LIYongSheng，HEPengFei，YAOLeiandLIUPeng1.中国地质大学地球科学与资源学院，北京100832.

2、中国地质调查局发展研究中心，北京1000373.国土资源部矿产勘查技术指导中心，北京1001204.成都理工大学地球科学学院，成都6100591.FacultyofEarthSciencesandＲesources，ChinaUniversityofGeosciences，Beijing100083，China2.DevelopmentandＲesearchCenterofChinaGeologicalSurvey，Beijing100037，China3.TechnicalGuidanceCenterforMineralＲesourcesExplora

3、tion，MLＲ，Beijing100120，China4.SchoolofGeosciences，ChengduUniversityofTechnology，Chengdu610095，China2013-08-20收稿，2013-10-23改回.JiaDL，YanGS，YeTZ，PangZS，LiYS，HePF，YaoLandLiuP.2013.ZirconU-Pbdating，HfisotopiccompositionsandpetrochemistryoftheGuangshangraniticcomplexinShaoxingareaofZhe

4、jiangProvinceanditsgeologicalsignificance.ActaPetrologicaSinica，29(12):4087－4103AbstractTheGuangshangraniticcomplexconsistsoftwogranitoids，themedium-grainalkalifeldspargraniteandthefine-grainalkalifeldspargranitethatintrudedintotheformer.LA-MC-ICP-MSzirconU-Pbdatingshowsthattheyf

5、ormedinYanshanian(162.4±0.9Maand156.3±0.7Ma)，indicatingthatGuangshanintrusionistheproductoftwocyclesofmagmaticactivitiesatleast.Thecompositionsofthesetwoperiodgranitesfallintothecalc-alkalinecategory，withanA/CNKratioof0.95～1.05.TheyhavemoderateＲEEandstrongEudepletionwithaslightly

6、rightinclinedsea-gullshapedＲEEpattern，andallbelongingtoA2-typegranite.ZirconεHf(t)valuesofthegranitesarenegative(－4.35to0)，andtwo-stageHfmodelages(tHf2)rangefrom1219Mato1478Ma，suggestingthatthesegranitesareoriginatedfromremeltingoftheMesoproterozoiccrustalmaterials.Combinedwithpr

7、eviousresults，weinferthatthelateEarlyYanshanianA-typegranitesinSouthChinawereformedinapost-orogenicextensionenvironment.KeywordsZirconU-Pbgeochronology;Geochemistry;ZirconHfisotope;Geologicalsignificance;Guangshangraniticcomplex;ShaoxingareaofZhejiang摘要广山花岗杂岩体主体部分由中粒碱长花岗岩和侵入其内部的细

8、粒碱长花岗岩组成，LA-MC-ICP-MS锆石U-Pb定年显示其形成年龄分别为1