The geochemistry of thermal waters and fumarolic gases on Shiashkotan I., Kuril Islands |
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| Authors: | E G Kalacheva T A Kotenko L V Kotenko E V Voloshina |
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| Institution: | 1. Institute of Volcanology and Seismology, Far East Branch, Russian Academy of Sciences, Bul. Piipa 9, Petropavlovsk-Kamchatskii, 683006, Russia
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| Abstract: | Based on geochemical studies we have updated our knowledge of the generation conditions and discharge of thermal waters on Shiashkotan Island. The thermal springs, which are abundant on the island, are surface expressions of the North Shiashkotan and Kuntomintar hydrothermal systems. The North Shiashkotan hydrothermal system shows the classical hydrochemical zonality. The discharge of the Kuntomintar hydrothermal system is confined within two thermal fields that are situated in the central and northeastern craters of the eponymous volcano. The high temperature of the gases that are issuing from Kuntomintar Volcano to the ground surface and the higher predictive ratios S/Cl, S/C, and CO2/H2 in its composition provide evidence of a possible renewal of its fumarole activity. |
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