How did solid Earth processes influence the accumulation of oxygen in our planet’s atmosphere? Theme(s): Chemistry of the Earth, Evolution, palaentology and biotic change, Geomagnetism, Marine Biogeochemistry, Palaeoenvironments and Palaentology, Tectonics, Volcanology and Solid Earth Geophysics Primary Supervisor: Benjamin Mills <b.mills@leeds.ac.uk> Institution: University of Leeds (School of Earth and Environment)