Volcanic gas and condensate samples were collected in 1993–1994 from fumaroles of Koryaksky and Avachinsky, basaltic andesite volcanoes on the Kamchatka Peninsula near Petropavlovsk–Kamchatsky. The highest-temperature ...
Isotope data should help to clarify the problem of the origin of water participating in hydrothermal activity. Thus, isotope data suggest that water participating in calcalkalic magma generation is of crustal (oceanic) ...