First volatile inventory for Gorely volcano, Kamchatka

Gorely volcano, located in Kamchatka, has been identified as a significant contributor to global volcanic gas emissions. The first comprehensive assessment of its volatile flux reveals that during non-eruptive degassing at 900°C in September 2011, Gorely emitted approximately 11,000 tons of gas daily, with a composition dominated by water (93.5%), followed by CO₂ (2.6%), SO₂ (2.2%), HCl (1.1%), and trace halogens like bromine and iodine. This study, utilizing in situ and remote sensing techniques, highlights Gorely's role as a representative arc emitter, contributing 0.3% of global CO₂ and 1.6% of HCl emissions from arc volcanism. The volcanic gas ratios (H₂O/SO₂ ≈ 43, CO₂/SO₂ ≈ 1.2, HCl/SO₂ ≈ 0.5) suggest that Gorely's magmatism reflects subduction-modified mantle sources in the northwest Pacific region, providing new insights into volatile abundances and origins in this tectonic setting.

Aiuppa, A., Giudice, G., Liuzzo, M., Tamburello, G., Allard, P., Calabrese, S., Chaplygin, I., McGonigle, A. J. S., & Taran, Y. (2012). First volatile inventory for Gorely volcano, Kamchatka. Geophysical Research Letters, 39(6). Portico. https://doi.org/10.1029/2012gl051177