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时间:2020-04-01
《湘南红旗岭锡多金属矿床地质特征及Ar-Ar同位素年代学研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、10000569/2012/028(12)378797ActaPetrologicaSinica岩石学报湘南红旗岭锡多金属矿床地质特征及ArAr同位素年代学研究1211,2222袁顺达刘晓菲王旭东吴胜华原垭斌李雪凯王铁柱1211,2222YUANShunDa,LIUXiaoFei,WANGXuDong,WUShengHua,YUANYaBin,LIXueKaiandWANGTieZhu1中国地质科学院矿产资源研究所,国土资源部成矿作用与矿产资源评价重点实验室,北京1000372中国地质大学,北京1000831MLRKeyLabor
2、atoryofMetallogenyandMineralAssessment,InstituteofMineralResources,ChineseAcademyofGeologicalSciences,Beijing100037,China2ChinaUniversityofGeosciences,Beijing100083,China20120809收稿,20121016改回4039YuanSD,LiuXF,WangXD,WuSH,YuanYB,LiXKandWangTZ2012Geologicalcharacteristic
3、sandArArgeochronologyoftheHongqilingtindepositinsouthernHunanProvinceActaPetrologicaSinica,28(12):3787-3797AbstractTheHongqilingtinpolymetallicdepositisatypicallodetypedepositfromtheDongpoorefield,whichisalsothelargestlodetypetindepositinHunanProvinceBoththeHongqilingti
4、ndepositandtheadjacentCongshubanandNanfeng’aoleadzincsilverdepositscontrolledbythesameNEtrendingfaultzonecomposealodetypeSnWPbZnAgcontinuumoresystemInthisstudy,high4039precisionArArdatingonmuscovitecollectedfromtheHongqilingdeposithasbeencarriedout,andyieldedawell
5、definedAr/Arplateauageof1533±10Ma,withanisochronageof1536±15Ma(MSWD=055)andaninverseisochronageof1535±15Ma(MSWD=21)ThesenewgeochronlogicalagesaresignificantolderthantheRbSrisochronage(1431±87Ma)offluid4039inclusionsinquartzfromthequartzveintypeoreandtheKfeldspar
6、ArArage(144±3Ma)ofthegraniteporphyry,butisconsistentwiththeSHRIMPzirconUPbages(155~151Ma)oftheQianlishangranites,andwiththemolybdeniteReOsagesoftheShizhuyuan(1510±35Ma)andtheJinchuantang(1588±66Ma)skarntypeoredepositswithinerror,indicatingthatthemineralizationsoflodet
7、ypeoredepositsinthisareaarealsospatiallyandtemporallyrelatedtotheQianlishangraniteplutonCombiningwithpreviousstudies,weproposedthathighlyfractionatedandhighheatproducing(HHP)graniticmagmaprovidedmainlyoreformingmaterialsforsuperaccumulationofmultimetalstoformseveral(super
8、)giantpolymetallicdepositsinthisarea,anddifferentphysicochemicalpro
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