Thallium isotopes: a novel geochemical tracer to map recycling in Earth's mantle

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This project will transfer to Australia an advanced new methodology: the characterisation of thallium isotopic signatures in the mantle system introduced during recycling of crustal material. This will allow the tracking of fluid processes in the mantle system in a completely new way and will provide significant new information about the fluids that can percolate up from subduction zones. The source of most economically interesting elements in the crust is from mantle-derived fluids, so their characterisation is critical to an understanding of the whole ore-forming process. Hence, this study will provide unique new information to apply to this important large-scale Earth problem.