Warakurna large igneous province: A new Mesoproterozoic large igneous province in west-central Australia

Michael Wingate, F. Pirajno, P.A. Morris

    Research output: Contribution to journalArticle

    142 Citations (Scopus)

    Abstract

    Coeval mafic igneous rocks emplaced rapidly over similar to1.5 X 10(6) km(2) in western and central Australia represent the erosional remnants of a late Mesoproterozoic large igneous province, named here the Warakurna large igneous province. SHRIMP U-Pb dating of rocks separated by as much as 1500 km indicates that the main episode of magmatism occurred between 1078 and ca. 1070 Ma. The Warakurna large igneous province includes layered mafic-ultramafic intrusions and mafic to felsic volcanic rocks and dikes in central Australia, a 1000-km-long mafic sill province in Western Australia, and several swarms of mafic dikes. The large areal extent and short duration imply emplacement above a mantle-plume head. Despite their wide separation, the mafic rocks have similar mid-oceanic-ridge basalt-normalized trace element patterns and rare earth element characteristics. West-directed paleocurrents, westward-radiating dike swarms, and the occurrence of high-Mg rocks indicate that the center of the plume head was located beneath central Australia. Other late Mesoproterozoic large igneous provinces, in the Laurentia and Kalahari cratons, appear to be significantly older than the Warakurna large igneous province in Australia and thus are unlikely to be related to the same mantle-plume head.
    Original languageEnglish
    Pages (from-to)105-108
    JournalGeology
    Volume32
    Issue number2
    DOIs
    Publication statusPublished - 2004

    Fingerprint

    large igneous province
    mantle plume
    mafic rock
    dike
    paleocurrent
    dike swarm
    felsic rock
    Laurentia
    sill
    rock
    igneous rock
    craton
    magmatism
    volcanic rock
    emplacement
    rare earth element
    plume
    basalt
    trace element

    Cite this

    @article{f5f4d00f6a11444fa0b761bca3c120e8,
    title = "Warakurna large igneous province: A new Mesoproterozoic large igneous province in west-central Australia",
    abstract = "Coeval mafic igneous rocks emplaced rapidly over similar to1.5 X 10(6) km(2) in western and central Australia represent the erosional remnants of a late Mesoproterozoic large igneous province, named here the Warakurna large igneous province. SHRIMP U-Pb dating of rocks separated by as much as 1500 km indicates that the main episode of magmatism occurred between 1078 and ca. 1070 Ma. The Warakurna large igneous province includes layered mafic-ultramafic intrusions and mafic to felsic volcanic rocks and dikes in central Australia, a 1000-km-long mafic sill province in Western Australia, and several swarms of mafic dikes. The large areal extent and short duration imply emplacement above a mantle-plume head. Despite their wide separation, the mafic rocks have similar mid-oceanic-ridge basalt-normalized trace element patterns and rare earth element characteristics. West-directed paleocurrents, westward-radiating dike swarms, and the occurrence of high-Mg rocks indicate that the center of the plume head was located beneath central Australia. Other late Mesoproterozoic large igneous provinces, in the Laurentia and Kalahari cratons, appear to be significantly older than the Warakurna large igneous province in Australia and thus are unlikely to be related to the same mantle-plume head.",
    author = "Michael Wingate and F. Pirajno and P.A. Morris",
    year = "2004",
    doi = "10.1130/G20171.1",
    language = "English",
    volume = "32",
    pages = "105--108",
    journal = "Geology",
    issn = "0091-7613",
    publisher = "GEOLOGICAL SOC AMER, INC",
    number = "2",

    }

    Warakurna large igneous province: A new Mesoproterozoic large igneous province in west-central Australia. / Wingate, Michael; Pirajno, F.; Morris, P.A.

    In: Geology, Vol. 32, No. 2, 2004, p. 105-108.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Warakurna large igneous province: A new Mesoproterozoic large igneous province in west-central Australia

    AU - Wingate, Michael

    AU - Pirajno, F.

    AU - Morris, P.A.

    PY - 2004

    Y1 - 2004

    N2 - Coeval mafic igneous rocks emplaced rapidly over similar to1.5 X 10(6) km(2) in western and central Australia represent the erosional remnants of a late Mesoproterozoic large igneous province, named here the Warakurna large igneous province. SHRIMP U-Pb dating of rocks separated by as much as 1500 km indicates that the main episode of magmatism occurred between 1078 and ca. 1070 Ma. The Warakurna large igneous province includes layered mafic-ultramafic intrusions and mafic to felsic volcanic rocks and dikes in central Australia, a 1000-km-long mafic sill province in Western Australia, and several swarms of mafic dikes. The large areal extent and short duration imply emplacement above a mantle-plume head. Despite their wide separation, the mafic rocks have similar mid-oceanic-ridge basalt-normalized trace element patterns and rare earth element characteristics. West-directed paleocurrents, westward-radiating dike swarms, and the occurrence of high-Mg rocks indicate that the center of the plume head was located beneath central Australia. Other late Mesoproterozoic large igneous provinces, in the Laurentia and Kalahari cratons, appear to be significantly older than the Warakurna large igneous province in Australia and thus are unlikely to be related to the same mantle-plume head.

    AB - Coeval mafic igneous rocks emplaced rapidly over similar to1.5 X 10(6) km(2) in western and central Australia represent the erosional remnants of a late Mesoproterozoic large igneous province, named here the Warakurna large igneous province. SHRIMP U-Pb dating of rocks separated by as much as 1500 km indicates that the main episode of magmatism occurred between 1078 and ca. 1070 Ma. The Warakurna large igneous province includes layered mafic-ultramafic intrusions and mafic to felsic volcanic rocks and dikes in central Australia, a 1000-km-long mafic sill province in Western Australia, and several swarms of mafic dikes. The large areal extent and short duration imply emplacement above a mantle-plume head. Despite their wide separation, the mafic rocks have similar mid-oceanic-ridge basalt-normalized trace element patterns and rare earth element characteristics. West-directed paleocurrents, westward-radiating dike swarms, and the occurrence of high-Mg rocks indicate that the center of the plume head was located beneath central Australia. Other late Mesoproterozoic large igneous provinces, in the Laurentia and Kalahari cratons, appear to be significantly older than the Warakurna large igneous province in Australia and thus are unlikely to be related to the same mantle-plume head.

    U2 - 10.1130/G20171.1

    DO - 10.1130/G20171.1

    M3 - Article

    VL - 32

    SP - 105

    EP - 108

    JO - Geology

    JF - Geology

    SN - 0091-7613

    IS - 2

    ER -