U—Pb Dating of Marble Assoicated With Eclogite from the Dabie Mountains,East China-中国期刊网

摘要 MarbleisassociatedwithultrahighpressureeclogiteintheDabieMountains.EastChina.U-Pbisotopedataforthemarbledefinea238U-206Pbisochronageof435±45awithaninitial206Pb/204Pbvalueof18.075±0.006,Theageof-435MaisinterpretedtorepresentthetimeoflimestonediagensisratherthanthetimeofmetarmorphicresettingaccompaniedbytheformationoftheultrahighpressureeclogitesatTriassic.ThepaleontologicandstratigraphicstudiesalsofavoralocalexcursioninthecarbonisotopiccompositionofthelatestordovicianwaterwithinasedimentarybasinbetweentheSino-KoreanandYangtzecratos.Becasusethelatestordovicianlimestonewasinvolvedintheeclogiteformation,thecontinentalcollisionbetweentheYangtzeandSino-KoreanPlateswouldpostdateordovican.

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U—Pb Dating of Marble Assoicated With Eclogite from the Dabie Mountains,East China

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U—Pb Dating of Marble Assoicated With Eclogite from the Dabie Mountains,East China

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