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- W2188010080 abstract "TheGungwaniaandTalalakimberliticpipesontheKundelunguPlateau(Katanga,SECongo)havebeenusedasdrillholes,to obtaincrustalzirconsforastudyofcrustalevolutionintheregionandtoconstraintheageofthebasementandthesedimentary provenanceoftheKatanganSupergroup.Twohundredandtwenty-ninezircongrainswereanalysedforU‐PbagesandHf-isotope compositions.JuvenileMesoarchean(3.4‐3.3Ga)crustintheregionunderwentrecyclingduringNeoarcheanandPaleoproterozoictime.ThePaleoproterozoiceventinvolvedlittleproductionofjuvenilecrust,andthisPaleoproterozoiccrustwasrecycled duringMesoproterozoicandNeoproterozoictime.BoththeMesoproterozoicandNeoproterozoicwerecharacterisedbybimodal magmatismreflectingextension,linkedwiththebreakupofRodiniaandtheopeningoftheKatanganbasin,andthedevelopmentof juvenilecrust.Detailedstudiesoftheexternalmorphologyofthezirconsindifferentagegroupssuggestthatthebasementbeneath theKundelunguregionispredominantlyPaleoproterozoicinage;otherzirconpopulationsmaybederivedfromtheKatangan sediments.Theabsenceofanyzirconsyoungerthan560MasupportsdepositionoftheBianoSubgroup,whichhoststhekimberlites,duringthePan-AfricanLufilianorogeny.TheArcheanCongoandZimbabwecratons,thePaleoproterozoicUbendianBelt (BangweuluBlock),thePaleo-to-MesoproterozoicIrumideBelt,theMesoproterozoicKibaranBeltandtheChomaKalomoBlock mayallhavecontributedmaterialtothesedimentsoftheKatanganSupergroup. ©2007ElsevierB.V.Allrightsreserved." @default.
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- W2188010080 date "2007-01-01" @default.
- W2188010080 modified "2023-10-01" @default.
- W2188010080 title "U-PbandHf-isotopeanalysesofzirconfromtheKundelungu Kimberlites,D.R.Congo:Implicationsforcrustalevolution" @default.
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- W2188010080 hasPublicationYear "2007" @default.
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