Genesis of the 1.21 Ga Marnda Moorn large igneous province by plume-lithosphere interaction

X. Wang, Z. Li, J. Li, Sergei Pisarevsky, Michael Wingate

    Research output: Contribution to journalArticle

    29 Citations (Scopus)

    Abstract

    The 1.21Ga Marnda Moorn large igneous province (LIP) of the Yilgarn Craton is important for understanding the final breakup of the Nuna (Columbia) supercontinent. However, its petrogenesis is poorly understood owing to the lack of geochemical data. We conducted geochemical analyses of the Gnowangerup-Fraser Dyke Suite, a major part of the Marnda Moorn LIP, and report the first geochemical and Nd isotope data for this LIP. Results of a complementary paleomagnetic study of these dykes will be published elsewhere. Most of the studied dykes consist of predominately tholeiitic and OIB-like dolerite (Group 1) and one arc-like and more felsic dyke (Group 2). Group 1 samples have incompatible trace element compositions similar to those of tholeiitic Hawaiian plume-induced OIB and typical asthenospheric mantle-derived Nd isotopes with eNd(t) varying from +3.7 to +7.5, produced mainly within the spinel stability field (
    Original languageEnglish
    Pages (from-to)85-103
    Number of pages19
    JournalPrecambrian Research
    Volume241
    Early online date4 Dec 2013
    DOIs
    Publication statusPublished - Feb 2014

    Fingerprint

    large igneous province
    Isotopes
    lithosphere
    plume
    ocean island basalt
    dike
    Trace Elements
    isotope
    supercontinent
    diabase
    petrogenesis
    spinel
    craton
    Chemical analysis
    trace element
    mantle
    spinell

    Cite this

    Wang, X. ; Li, Z. ; Li, J. ; Pisarevsky, Sergei ; Wingate, Michael. / Genesis of the 1.21 Ga Marnda Moorn large igneous province by plume-lithosphere interaction. In: Precambrian Research. 2014 ; Vol. 241. pp. 85-103.
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    abstract = "The 1.21Ga Marnda Moorn large igneous province (LIP) of the Yilgarn Craton is important for understanding the final breakup of the Nuna (Columbia) supercontinent. However, its petrogenesis is poorly understood owing to the lack of geochemical data. We conducted geochemical analyses of the Gnowangerup-Fraser Dyke Suite, a major part of the Marnda Moorn LIP, and report the first geochemical and Nd isotope data for this LIP. Results of a complementary paleomagnetic study of these dykes will be published elsewhere. Most of the studied dykes consist of predominately tholeiitic and OIB-like dolerite (Group 1) and one arc-like and more felsic dyke (Group 2). Group 1 samples have incompatible trace element compositions similar to those of tholeiitic Hawaiian plume-induced OIB and typical asthenospheric mantle-derived Nd isotopes with eNd(t) varying from +3.7 to +7.5, produced mainly within the spinel stability field (",
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    Genesis of the 1.21 Ga Marnda Moorn large igneous province by plume-lithosphere interaction. / Wang, X.; Li, Z.; Li, J.; Pisarevsky, Sergei; Wingate, Michael.

    In: Precambrian Research, Vol. 241, 02.2014, p. 85-103.

    Research output: Contribution to journalArticle

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    AU - Wingate, Michael

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