Japan Geoscience Union Meeting 2022

Session information

[E] Oral

S (Solid Earth Sciences ) » S-GC Geochemistry

[S-GC35] Volatiles in the Earth - from Surface to Deep Mantle

Fri. May 27, 2022 3:30 PM - 5:00 PM 101 (International Conference Hall, Makuhari Messe)

convener:Hirochika Sumino(Department of General Systems Studies, Graduate School of Arts and Sciences, The University of Tokyo), convener:Yama Tomonaga(Swiss Federal Institute of Aquatic Science and Technology), Yuji Sano(Center for Advanced Marine Core Research, Kochi University ), convener:Takeshi Hanyu(Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics), Chairperson:Yama Tomonaga(Swiss Federal Institute of Aquatic Science and Technology), Yuji Sano(Center for Advanced Marine Core Research, Kochi University)

Volatiles play an important role in the dynamical and chemical processes in the Earth. The presence of volatiles drastically changes mineral stability and rheological behavior of the rocks. Chemical fractionation, such as partial melting, hydration, and dehydration are controlled by volatiles in the rocks. Volatiles enhance the production of magmas and drive their ascent and volcanic eruption. The atmosphere and hydrosphere have been generated by variety of degassing events from the mantle through volcanism. Some volatiles in the Earth's surface have been suggested to be recycled back into the mantle beyond subduction zones. Although the significance of volatiles in the Earth's evolution has been recognized, each of these processes is poorly constrained. We therefore welcome contributions from experimental, observational, and modeling studies that help shed light on the behavior, chemical/physical characteristic, and flux/budget of volatiles, such as hydrogen, carbon, nitrogen, noble gases, halogens, and sulfur. We encourage studies linking the behavior of multiple volatile elements and their isotopic compositions. Studies investigating the linkage between volatile and solid geochemical tracers, the phase equilibria of volatile-bearing mantle assemblages, and the effect of volatiles on the physical properties of the mantle are also welcome.

3:30 PM - 3:45 PM

*Glen Snyder1,2, Naoto Takahata2, Stephen Alan Bowden3, Naizhong Zhang4, Renat B. Shakirov5, Hitoshi Tomaru6, Fumito Shiraishi7, Yuji Sano8, Ryo Matsumoto1 (1.Gas Hydrate Research Lab, Meiji Univeristy, 2.Atmosphere and Ocean Research Institute, University of Tokyo, 3.University of Aberdeen, 4.Earth-Life Science Institute, Tokyo Institute of Technology, 5.Pacific Oceanological Institute, 6.Chiba University, 7.Hiroshima University, 8.Kochi University)

3:45 PM - 4:00 PM

Ogheneworo Offeh2, Colin Taylor2, Simone Fyfe2, Akira Ijiri3, Jun-ichiro Ishibashi1, Yuzuru Yamamoto4,1, *Stephen Alan Bowden1,2 (1.Kobe Ocean Bottom Exploration Centre, Kobe University, Kobe, 2.School of Geosciences, University of Aberdeen, Aberdeen, U.K., 3.Graduate School of Maritime Sciences, Kobe University, 4.Department of Planetology, Graduate School of Science, Kobe University)

4:15 PM - 4:30 PM

*Bernard Marty1, David J. Byrne1, Michael W. Broadley1, Evelyn Fueri1, Laurent Zimmermann1, Ryuji Okazaki2, Tooru Yada3, Fumio Kitajima2, Mizuki Yamamoto2, Shogo Tachibana4, Hayabusa2 -initial-analysis volatile team, Hayabusa2 -initial-analysis core (1.Centre de Recherches Petrographiques et Geochimiques/ CNRS - Universite de Lorraine France, 2.Dept. Earth Planet. Sci. Kyushu U, Japan, 3.ISAS, JAXA, Japan, 4.UTOPS, U. Tokyo, Japan)

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