It has been proposed that the high concentrations of moderately siderophile elements (e.g. Ni and Co) in the Earth's mantle are the result of metal-silicate equilibration at the base of a deep magma ocean that formed during ...
The self-diffusivities of silicon and oxygen in diopside (CaMgSi2O6) liquid have been measured at pressures and temperatures up to 15 GPa and 2300°C, using a 1200-tonne multianvil apparatus. Diffusion couples were prepared ...