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    Subduction of Elements with Variable Oxidation State: Effects on the Source of Arc Magmatism

    Hayes S 2017.pdf (432.7Mb)
    Access Status
    Open access
    Authors
    Hayes, Sarah Louise
    Date
    2017
    Supervisor
    Assoc. Prof. Katy Evans
    Type
    Thesis
    Award
    MPhil
    
    Metadata
    Show full item record
    Faculty
    Science and Engineering
    School
    Geology
    URI
    http://hdl.handle.net/20.500.11937/68271
    Collection
    • Curtin Theses
    Abstract

    Subduction of sediments has had little influence on bulk rock, mineralogical and redox compositions. Fluid infiltration is the most significant driver in mass transfer and mineralogical changes are localised to lithological contacts and shear zones. The sediments are likely to have little influence on the redox state of the sub-arc mantle. The lack of decarbonation suggests that CO2 could potentially be sequestered in the deep mantle on the timescale of millions to billions of years.

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