2017年5月22日(月) 10:45 〜 12:15 A03 (東京ベイ幕張ホール)

コンビーナ:羽生 毅(海洋研究開発機構 地球内部物質循環研究分野)、David R Hilton(University of California San Diego)、角野 浩史(東京大学大学院総合文化研究科広域科学専攻相関基礎科学系)、佐野 有司(東京大学大気海洋研究所海洋地球システム研究系)、座長:Hilton David(University of California San Diego)、座長:羽生 毅(海洋研究開発機構 地球内部物質循環研究分野)

Volatiles play an important role in the dynamical and chemical evolution in the solid Earth. Rheological behavior of mantle rocks and mineral stabilities drastically change by the presence of volatiles. Chemical differentiation caused by partial melting and fluid transport is enhanced by volatiles. The hydrosphere has been maintained from the early Earth by balancing degassing from and regassing to the solid Earth. However, fundamental questions still remain, such as, amount and origin of volatiles in the mantle and crust, transport mechanisms of volatiles from Earth's surface to the solid interior, condition under which volatiles are stabilized in minerals from low to high pressure, influence of volatiles on physical properties of rocks and minerals, and volatile fluxes from the solid Earth to the surface through magmatism. Because these problems are tightly related with each other, we aim to have a discussion by integrating contributions from various fields such as geochemical measurements, geophysical observations, high pressure and temperature experiments, theoretical and modeling studies, all of which shed light on the cycles of volatiles, such as hydrogen, carbon, nitrogen, noble gases, halogens, and sulfur.