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 1:45 PM - 3:00 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:Yama Tomonaga(University of Basel), Hirochika Sumino(Research Center for Advanced Science and Technology, The 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.

2:30 PM - 2:45 PM

*Sebastien Giroud1,2, Yama Tomonaga1,4, Matthias Brennwald1, Rolf Kipfer1,2,3 (1.Dept. of Water Resources and Drinking Water, Eawag, 2.Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 3.Institute of Geochemistry and Petrology, ETH Zurich, 4.Dept. of Environmental Sciences, University of Basel)

2:45 PM - 3:00 PM

*Iona McIntosh1, Kenichiro Tani2, Kaori Aoki3, Alexander Nichols4, Taiki Yanagishima5, Qing Chang1, Jun-Ichi Kimura1, Makoto Kobayashi6, Masanori Murata3, Takehiko Suzuki3 (1.Japan Agency for Marine-Earth Science and Technology, 2.National Museum of Nature and Science, 3.Tokyo Metropolitan University, 4.University of Canterbury Christchurch, NZ, 5.Kyoto University, 6.Mt Fuji World Heritage Centre)

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