Figure 5

H ₂ O solubility in silicate melts at low and high pressures as a function of fugacity of H ₂ O, ${\mathit{f}}_{{\mathbf{H}}_{\mathbf{2}}\mathbf{O}}$ . (A) Solubility in SiO₂ melt at and below ambient pressure from Moulson and Roberts (1961). (B) Solubility in SiO₂ melt at high pressure as a function of ${\mathit{f}}_{{\mathrm{H}}_2\mathrm{O}}$ from Kennedy et al. (1962). (C) Solubility in various silicate melts as a function of ${\mathit{f}}_{{\mathrm{H}}_2\mathrm{O}}$ as compiled by McMillan (1994).