JpGU-AGU Joint Meeting 2020

セッション情報

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[E] 口頭発表

セッション記号 S (固体地球科学) » S-GC 固体地球化学

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

コンビーナ:羽生 毅(海洋研究開発機構 海域地震火山部門)、Gray E Bebout(Lehigh University)、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)

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.

[SGC48-02] Multiple halogen components in subcontinental lithospheric mantle revealed by single-grain analysis of mantle-derived xenoliths

*角野 浩史1、仁木 創太2、Ray Burgess3、小林 真大4、鍵 裕之2 (1.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、2.東京大学大学院理学系研究科地殻化学実験施設、3.マンチェスター大学地球環境学教室、4.東京都立産業技術研究センター)

[SGC48-03] C-N-He-Ar Cycling at the Hikurangi Subduction Margin, New Zealand

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)

[SGC48-04] Helium and carbon characteristics in forearc fluids of Central America

★Invited Papers

*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)

[SGC48-05] Evidence for volatile-rich mantle transition zone beneath NE China: implication from the geochemistry of melt inclusions from Wudalianchi basalts

*柵山 徹也1、林 裕馬1、清水 健二2、牛久保 孝行2、羽生 毅3、木村 純一3、Tian Wei4 (1.大阪市立大学大学院理学研究科、2.国立研究開発法人海洋研究開発機構高知コア研究所、3.国立研究開発法人海洋研究開発機構、4.北京大学)