Japan Geoscience Union Meeting 2023

Session information

[E] Oral

S (Solid Earth Sciences ) » S-GC Geochemistry

[S-GC37] Volatiles in the Earth - from Surface to Deep Mantle

Tue. May 23, 2023 3:30 PM - 5:00 PM 303 (International Conference Hall, Makuhari Messe)

convener:Takeshi Hanyu(Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics), Yama Tomonaga(University of Basel), Hirochika Sumino(Research Center for Advanced Science and Technology, The University of Tokyo), Yuji Sano(Center for Advanced Marine Core Research, Kochi University ), Chairperson:Yuji Sano(Center for Advanced Marine Core Research, Kochi University), Takeshi Hanyu(Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics)

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, Ryo Matsumoto2, Hitoshi Tomaru3, Fumito Shiraishi5, Shiono Miki1, Yuji Sano4, Ma Teresa Nakajima1 (1.Atmosphere and Ocean Research Institute, University of Tokyo, 2.Gas Hydrate Research Laboratory, Meiji University, 3.Department of Earth Sciences, Chiba University, 4.Center for Advanced Marine Core Research, Kochi University, 5.Earth and Planetary Systems Science Program, Hiroshima University)

3:45 PM - 4:00 PM

*Nanae Fukushima1, Hirochika Sumino2, Tomoaki Morishita3, Juan Miguel Guotana4, Ikuya Nishio4, Kenichiro Tani5, Pedro Waterton6, Kristoffer Szilas6, Hikaru Sawada8, Masafumi Murayama7 (1.Graduate School of Arts and Sciences, The University of Tokyo, 2.Research Center for Advanced Science and Technology, The University of Tokyo, 3.School of Geoscience and Civil Engineering, College of Science and Technology, Kanazawa University, 4.Graduate School of Natural Science and Technology, Kanazawa University, 5.Department of Geology and Paleontology, National Museum of Nature and Science, 6.Department of Geosciences and Natural Resource Management, University of Copenhagen, 7.Faculty of Agriculture and Marine Science, Kochi University, 8.Japan Marine Science and Technology Center)


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