Sm-Nd model age of an early Proterozoic gabbro-anorthosite from the Caledonian fold belt in North-East Greenland

Ole Stecher, Niels Henriksen

    Publikation: Bidrag til bog/rapport/konferenceproceedingsKapitel i rapport

    Abstrakt

    Metamorphosed anorthositic and gabbro-anorthositic rocks are found as scattered occurrences in the basement gneisses of the Caledonian fold belt of North-East Greenland. A Tm-MD-nd model age determined on a gabbro- anorthositic sample yields a value of 2146 Ma. This model age is in agreement with the general age of crust formation in the region. The result shows that anorthosites, which are of Archaean derivation in many areas in Greenland, cannot on their own be used as an indicator of Archaean crust.
    OriginalsprogEngelsk
    TitelGeology of North-East Greenland
    ForlagGrønlands Geologiske Undersøgelse
    Sider135–137
    Antal sider3
    DOI
    StatusUdgivet - 1994

    Publikationsserier

    NavnRapport Grønlands Geologiske Undersøgelse
    ForlagGGU
    Vol/bind162
    ISSN (Trykt)0418-6559
    ISSN (Elektronisk)2597-2944

    Programområde

    • Programområde 4: Mineralske råstoffer

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