Geochemistry, Geophysics, Geosystems
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Earth-prints Geochemistry, Geophysics, Geosystems RESEARCH ARTICLE Gas Emissions From Volcanoes of the Kuril Island Arc (NW 10.1029/2018GC007477 Pacific): Geochemistry and Fluxes Special Section: Yuri Taran1,2 , Mikhail Zelenski3, Ilya Chaplygin4, Natalia Malik2, Robin Campion1, Carbon Degassing Through Salvatore Inguaggiato5, Boris Pokrovsky6, Elena Kalacheva2, Dmitri Melnikov2, Volcanoes and Active Tectonic Ryunosuke Kazahaya7 , and Tobias Fischer8 Regions 1Institute of Geophysics, UNAM, Coyoacan, Ciudad de Mexico, Mexico, 2Institute of Volcanology and Seismology FEB RAS, 3 Key Points: Petropavlovsk-Kamchatsky, Russia, Institute of Experimental Mineralogy RAS, Chernogolovka, Moscow District, Russia, 4 5 The SO2 flux was for the first time Insitute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, RAS, Moscow, Russia, National Institute measured from the whole Kuril Island of Geophysics and Volcanology, Palermo, Italy, 6Geological Institute RAS, Pyzhevski 8, Moscow, Russia, 7Geological Survey arc of Japan, Tsukuba, Japan, 8University of New Mexico, Albuquerque, NM, USA The average molar C/S ratio for the Kuril arc fumaroles is <1, and the CO2 flux is comparable with the SO2 flux Abstract The Kuril Island arc extending for about 1,200 km from Kamchatka Peninsula to Hokkaido 3He/4He ratios in fumarolic gases are Island is a typical active subduction zone with 40 historically active subaerial volcanoes, some of which >7Ra except the southernmost are persistently degassing. Seven Kurilian volcanoes (Ebeko, Sinarka, Kuntomintar, Chirinkotan, Pallas, Berg, Kunashir Island and Kudryavy) on six islands (Paramushir, Shiashkotan, Chirinkotan, Ketoy, Urup, and Iturup) emit into the atmosphere > 90% of the total fumarolic gas of the arc.
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