The Cycling of Redox Sensitive Elements at Subduction Zones: Insights from Subducted Mantle Lithosphere
Access Status
Open access
Authors
Crossley, Rosalind Joanne
Date
2016Supervisor
Assoc. Prof. Katy Evans
Type
Thesis
Award
PhD
Metadata
Show full item recordFaculty
Science and Engineering
School
Department of Applied Geology
Collection
Abstract
Upon subduction and devolatilisation, hydrated mantle lithosphere potentially transfers redox sensitive elements to oxidise or reduce the sub-arc mantle and other lithologies. In this study, whole rock and mineral geochemistry, petrographic analysis, in-situ trace element geochemistry and sulfur isotopes investigate changes to iron, sulfur and highly siderophile element distribution throughout the subduction cycle. The change in sample redox state was limited with local mobilisation of these elements only, except in the case of hybrid lithologies.
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