草津白根火山の火山ガスと温泉ガスの希ガス・炭素同位体比

山根 康平; 角野 浩史; 内藤 大貴; 加藤 翔太; 柴田 卓巳; 周 楚凡; 屋敷 尭紀; 小林 真大; 寺田 暁彦

doi:10.14862/geochemproc.63.0_219

Abstracts of Annual Meeting of the Geochemical Society of Japan

DOI https://doi.org/10.14862/geochemproc.63.0_219

Conference information

Host: Abstracts of Annual Meeting of the Geochemical Society of Japan

Noble gas and carbon isotope ratios at Kusatsu-Shirane volcano, Japan

*Kohei Yamane, Hirochika Sumino, Daiki Naito, Shota Kato, Takumi Shibata, Chu―Fan Zhou, Takanori Yashiki, Masahiro Kobayashi, Akihiko Terada

Author information

Keywords: Noble gas, Helium, Carbon, Isotope ratio, Kusatsu-Shirane volcano

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 219-

Details

Abstract

Noble gas and carbon isotope ratios of volcanic and hot-spring gases collected at Kusatsu-Shirane volcano, Japan were determined. No temporal change in 3He/4He ratios was observed even after volcanic unrest since June 2014. The carbon isotope ratio and CO2/3He ratios are typical values for subduction zone volcanic fluid samples, with dominant contribution of marine carbonates.

Corresponding author

Register with J-STAGE for free!