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

Ole Stecher, Niels Henriksen

    Research output: Chapter in Book/Report/Conference proceedingChapter in report

    Abstract

    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.
    Original languageEnglish
    Title of host publicationGeology of North-East Greenland
    PublisherGrønlands Geologiske Undersøgelse
    Pages135–137
    Number of pages3
    DOIs
    Publication statusPublished - 1994

    Publication series

    SeriesRapport Grønlands Geologiske Undersøgelse
    Volume162
    ISSN0418-6559

    Programme Area

    • Programme Area 4: Mineral Resources

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