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    Understanding Neoproterozoic geodynamics through Hafnium isotope arrays

    Martin E 2020.pdf (30.17Mb)
    Access Status
    Open access
    Authors
    Martin, Erin Lee
    Date
    2020
    Supervisor
    William Collins
    Zheng-Xiang Li
    Type
    Thesis
    Award
    PhD
    
    Metadata
    Show full item record
    Faculty
    Science and Engineering
    School
    School of Earth and Planetary Sciences
    URI
    http://hdl.handle.net/20.500.11937/80148
    Collection
    • Curtin Theses
    Abstract

    The Neoproterozoic supercontinent Rodinia assembled by the collision of a global-scale subduction girdle at the end of the Mesoproterozoic. A new subduction girdle is not established until the assembly of Gondwana some 500 Ma later, at the end of the Neoproterozoic. Thus, the global Hf isotope record suggests that the Neoproterozoic was dominated by the degree-1 condition, which facilitated Gondwana amalgamation, but it is not clear that degree-2 mantle convection facilitated the breakup of Rodinia.

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