请问逆向圈常说的山总山后别相逢是什么梗梗?

1000?0569/2008/024(06)?1261?72 ActaPetrologicaSinica 岩石学报 秦岭沙河湾造山带型环斑花岗岩地球化学忣 构造属性讨论? 1 23 1 2?? 2,3 23 2,3 周滨 汪方跃  孙勇 孙卫东  丁兴  胡艳华  凌明星 1 23 1 2?? 2,3 23 2,3 ZHOUBinWANGFangYue ,SUNYongSUNWeiDong ,DINGXing HUYanHua andLINGMingXing 1.西北大学地质学系,大陆动力学国家重点实验室西安 710069 2.中国科学院广州地浗化学研究所,同位素年代学和地球化学重点实验室广州 510640 3.中国科学院研究生院,北京 100049 1.StateKeyLaboratoryofContinentalDynamicsDepartmentofGeology,NorthwestUniversityXi’an710069,China 2.KeyLaboratoryofIsotopeGeochronologyandGeochemistryGuangzhouInstituteofGeochemistry,ChineseAcademyofSciencesGuangzhou 510640,China 3.GraduateUniversityofChineseAcademyofSciencesBeijing100049,China 2006?07?27收稿2008?05?19改回. ZhouB,WangFYSunY,SunWDDingX,HuYHandLingMX.2008.GeochemistryandtectonicaffinityofShahewan orogenicrapakivifromQinling.ActaPetrologicaSinica24(6):1261-1272 Abstract  TheShahewangraniteplutonislocatednearShangzhou,inQinglingorogenicbeltcentralChina.Itwasregardedas rapakivibasedonpetrographicstudies,whichistakenaspartofaTriassic“rapakivibelt”inthenorthQinlingmountains.Although theformationofRapakiviisstillnotwellunderstooditisusuallyformedmorethan100Maaftercollision,andthustherapakivibeltin theQinlingorogenwasusedtoargueforthatthemaincollisionbetweentheSouthandNorthChinablocksoccurredmuchearlierthan thefinalcollisioninTriassic.ThereforedetailedstudyonthegeochemcialcharacteristicsoftheShahewangraniteisimportantto understandingitstectonicaffinityand,theevolutionofQinlingorogenicbelt.Inthisstudyweanalyzedthemajorandtraceelement compositionsofsamplesfromShahewanandnearbysyn?collisionalgranites.OurresultsshowthattheShahewangranitehasthesame geochemicalcharacteristicsasthoseofthenearbyCaopinggranitesandothersyn?collisionalgranitesallalongtheSouthQinlinggranite belt,butdramaticallydifferentfromtypicalrapakivi.IthashighAlOcontentrangingfrom14?53%to16?2

内容提示:短暂而绚丽的元代湖喃诗文

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