Imaging ancient LIP architecture with combined gravity and seismic methods: application to the Warakurna Large Igneous Province

Abdulrhman Al Ghamdi

    Research output: ThesisDoctoral Thesis

    Abstract

    The deep crustal structures of Warakuma LIP have been imaged using combined-gravity-seismic methods even with absence of the thermal system with younger LIPs. Hence, this work adds to the body of knowledge regarding geophysical imaging of the lower-crustal signature of the magmatic processes in ancient LIPs. Modelling results indicate an extensive area with very thick crust (> 45) and high-density materials (> 2.85 g/cm3) at the base of the crust, interpreted as a magmatic underplate. This area occurs beneath the western Musgrave Province and extends to the north-west and north-east, consistent with being part of the Warakuma LIP.
    LanguageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    • The University of Western Australia
    Award date20 Feb 2017
    StateUnpublished - 2017

    Fingerprint

    large igneous province
    seismic method
    gravity
    crust
    crustal structure
    modeling
    material
    province
    young

    Cite this

    @phdthesis{1c50728de8674190a43c3e4de3dfa71c,
    title = "Imaging ancient LIP architecture with combined gravity and seismic methods: application to the Warakurna Large Igneous Province",
    abstract = "The deep crustal structures of Warakuma LIP have been imaged using combined-gravity-seismic methods even with absence of the thermal system with younger LIPs. Hence, this work adds to the body of knowledge regarding geophysical imaging of the lower-crustal signature of the magmatic processes in ancient LIPs. Modelling results indicate an extensive area with very thick crust (> 45) and high-density materials (> 2.85 g/cm3) at the base of the crust, interpreted as a magmatic underplate. This area occurs beneath the western Musgrave Province and extends to the north-west and north-east, consistent with being part of the Warakuma LIP.",
    keywords = "Warakuma, Gravity modeling, Receiver function, Capricorn Orogen, Composition model, 3D gravity inversion, Underplating, Musgrave Province",
    author = "{Al Ghamdi}, Abdulrhman",
    year = "2017",
    language = "English",
    school = "The University of Western Australia",

    }

    TY - THES

    T1 - Imaging ancient LIP architecture with combined gravity and seismic methods: application to the Warakurna Large Igneous Province

    AU - Al Ghamdi,Abdulrhman

    PY - 2017

    Y1 - 2017

    N2 - The deep crustal structures of Warakuma LIP have been imaged using combined-gravity-seismic methods even with absence of the thermal system with younger LIPs. Hence, this work adds to the body of knowledge regarding geophysical imaging of the lower-crustal signature of the magmatic processes in ancient LIPs. Modelling results indicate an extensive area with very thick crust (> 45) and high-density materials (> 2.85 g/cm3) at the base of the crust, interpreted as a magmatic underplate. This area occurs beneath the western Musgrave Province and extends to the north-west and north-east, consistent with being part of the Warakuma LIP.

    AB - The deep crustal structures of Warakuma LIP have been imaged using combined-gravity-seismic methods even with absence of the thermal system with younger LIPs. Hence, this work adds to the body of knowledge regarding geophysical imaging of the lower-crustal signature of the magmatic processes in ancient LIPs. Modelling results indicate an extensive area with very thick crust (> 45) and high-density materials (> 2.85 g/cm3) at the base of the crust, interpreted as a magmatic underplate. This area occurs beneath the western Musgrave Province and extends to the north-west and north-east, consistent with being part of the Warakuma LIP.

    KW - Warakuma

    KW - Gravity modeling

    KW - Receiver function

    KW - Capricorn Orogen

    KW - Composition model

    KW - 3D gravity inversion

    KW - Underplating

    KW - Musgrave Province

    M3 - Doctoral Thesis

    ER -