2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Sep 15 - Sep 19, 2021Online
日本鉱物科学会年会
2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Sep 15 - Sep 19, 2021Online

[S2-04]Antigorite vein formation and fluid flow in the crust-mantle transition zone in the Oman ophiolite[Presentation award entry]

*Kazuki Yoshida1, Atsushi Okamoto1, Ryosuke Oyanagi2, Masao Kimura3(1. Tohoku Univ., 2. Kokushikan Univ., 3. KEK)

Keywords:

Serpentinization,Oman ophiolite,Antigorite,Fluid flux

Antigorite is an important mineral for the estimation of the pressure/temperature condition during serpentinization. In this study, we investigated completely serpentinized dunite with antigorite veins from the crust-mantle transition zone of the Oman ophiolite. We investigated vein structures, mass transport, and fluid flux during the antigorite vein formation. The results suggest that alkaline fluid moved through the crust-mantle transition zone during the antigorite vein formation.