Hydrogen diffusion in mantle minerals (Olivine, wadsleyite, ringwoodite)

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1) Recently I completed to collect X-ray diffraction patterns for simple carbonate systems Na2CO3, K2CO3, CaCO3, and FeCO3 in the range 1-30 GPa and 27-1400℃ to constrain phase relations and EOS. 2) I supposed mechanism and estimated possible rates of carbonatite±H_2O and hydrous melt ascent from the transition zone and might be lower mantle. This mechanism so called"dissolution-precipitation" controlled by diffusion transport of silicate components via hydrous or carbonatite melt. 3) I collected experimental data point to constrain phase diagrams and melting phase relations in simple carbonate systems (K-Mg, K-Ca, Na-Mg, Na-Ca, K-Ca-Mg, Na-Ca-Mg, K-Na-Ca-Mg)at the conditions corresponding to the basement of lithospheric mantle.