Abstract
Hydration of ultramafic rocks (sperpentinization) commonly occurs in mid-ocean ridges, and the extent and distribution of hydrated mantle plays an important role on the global circulation of H2O fluids. In this study, we conducted hydrothermal experiments on serpentinization to clarify the relationship between the temporal evolution of solution chemistry, progress of hydration reaction and textural developments. The starting materials were powders of olivine or orthopyroxene. The powders and the distilled water were set in the batch type vessel. The temperatures were 250 degreeC at the liquid-vapor saturation curve. The duration was up to 1008 hours. We will show these experimental results and olivine-orthopyroxene-water system experimental result in poster.
