JpGU-AGU Joint Meeting 2020

Session information

[E] Oral

S (Solid Earth Sciences ) » S-GC Geochemistry

[S-GC48] Volatiles in the Earth - from Surface to Deep Mantle

convener:Takeshi Hanyu(Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics), Gray E Bebout(Lehigh University), Hirochika Sumino(Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo), Yuji Sano(Division of Ocean and Earth Systems, Atmosphere and Ocean Research Institute, University of Tokyo)

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.

*Hirochika Sumino1, Sota Niki2, Ray Burgess3, Masahiro Kobayashi4, Hiroyuki Kagi2 (1.Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 2.Geochemical Research Center, Graduate School of Science, University of Tokyo, 3.School of Earth and Environmental Sciences, University of Manchester, 4.Tokyo Metropolitan Industrial Technology Research Institute)

Gabe S Epstein1, *Gray E Bebout1,2, Bruce W Christenson3, Hirochika Sumino4, Ikuko Wada5, Cynthia A Werner6, David R Hilton7 (1.Dept. Earth and Environmental Sciences, Lehigh University, USA, 2.Okayama University, Institute for Planetary Materials, 3.National Isotope Center, GNS Science, New Zealand, 4.Dept. of Basic Science, University of Tokyo, 5.Dept. of Earth Sciences, University of Minnesota, USA, 6.USGS-Contractor, USA, 7.Scripps Institution of Oceanography, USA)

*Peter H Barry1, J. M. de Moor2, M. Nakagawa3, D. Giovannelli4, M. Schrenk5, A. M. Selzer1, K. G. Lloyd6 (1.Woods Hole Oceanographic Institution, 2.Observatorio Volcanológico y Sismológico de Costa Rica (OVSICORI), Universidad Nacional, Costa Rica, 3.Earth-Life Science Institute, Tokyo Institute for Technology, Tokyo, Japan, 4.Department of Biology, University of Naples “Federico II”, Naples, Italy, 5.Department of Earth and Environmental Sciences, Michigan State University, MI, USA, 6.Department of Microbiology, University of Tennessee, TN, USA)