2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 19 - Sep 23, 2019Kyushu University Ito Campus
2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 19 - Sep 23, 2019Kyushu University Ito Campus
[S2P-01]Kinetics of serpentinization constrained from olivine dissolution rate at hydrothermal conditions
*Ryosuke Oyanagi1, tatsu kuwatani1, katsuhiko suzuki1(1. JAMSTEC)
Keywords:
olivine,kinetics,serpentinization,hydrothermal experiments
Serpentinization gives significant changes to both chemical and physical properties of the oceanic lithosphere. Several studies suggested that the rate-limiting process of serpentinization is the dissolution of olivine. However, the olivine dissolution rates at > 150°C have never been measured. In this study, dissolution rate of olivine was measured at 200-300 °C. Based on dependences of temperature on dissolution rate, the time scales on hydrothermal alteration of peridotite will be discussed.