4-11-Growth-and-Differentiation-of-the-Continental-Crust-from-Isotope-Studies-of-Accessory-Minerals_2014_Reference-Module-in-Earth-Systems-and-Environ

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1、4.11GrowthandDifferentiationoftheContinentalCrustfromIsotopeStudiesofAccessoryMineralsAISKemp,TheUniversityofWesternAustralia,Perth,WA,AustraliaCJHawkesworth,UniversityofStAndrews,StAndrews,UKã2014ElsevierLtd.Allrightsreserved.4.11.1AQuestionofScale3794.

2、11.2InformationContainedinAccessoryMinerals3804.11.2.1AgeInformationAvailablefromZircon3824.11.2.2ModelAges–LimitationsandWaysForward3824.11.3TechnicalAspects3854.11.3.1GeneralConsiderations3854.11.3.2LaserAblationMassSpectrometry3864.11.3.2.1ZirconHfiso

3、toperatiomeasurementbylaserablation3864.11.3.2.2Hfisotoperatiomeasurementwithageestimation3884.11.3.3SecondaryIonizationMassSpectrometry3894.11.4AreasofProgress3904.11.4.1IntheBeginning:TheHadeantoEoarcheanEarth3904.11.4.1.1EarlysilicateEarthdifferentiat

4、ion–theJackHillszirconarchive3914.11.4.1.2ThecompositionofHadeancrust3934.11.4.1.3Alunarconnection?3944.11.4.1.4EarlyEarthgeodynamics3954.11.4.1.5ThelongevityofHadeancrust3984.11.4.2TimingandRatesofContinentalGrowthfromDetritalZircons3994.11.4.2.1Pinpoin

5、tingcrustgenerationepisodeswithU–Pb,oxygen,andLu–Hfisotopes3994.11.4.2.2Acaveatontheuseofoxygenisotopes4014.11.4.2.3Isthereevidenceforglobalepisodiccrustgeneration?4014.11.4.2.4Zirconagepeaks,selectivepreservation,andsupercontinents4034.11.4.2.5Continent

6、al‘growth’curves4044.11.4.3GranitesandCrustalGrowth:InterrogatingthePlutonicRecord4054.11.4.3.1S-andI-typegranites:TheLachlanexample4064.11.4.3.2Thezircontestimony4074.11.4.3.3Broaderimplicationsforsilicicmagmagenesis4094.11.4.3.4Disequilibriummelting?40

7、94.11.4.4TheGeodynamicsofContinentGenerationandEvolution4104.11.4.5InsightsfromAccessoryMineralsBesidesZircon4124.11.5TheFutureandNewFrontiers414Acknowledgments415References4154.11.1AQuestionofScale(CliftandVannuchi,2004;SchollandvonHuene,2009),asforcibl

8、ypostulatedbyArmstrong(1981),andsothepreser-TheconceptofscaleisofcentralrelevancetotheEarthvationpotentialofcrustinthegeologicalrecordmaybeaSciences.Thishasbothaphysicaldimension(length-scale)functionoftectonicenvironment(