Тип публикации: статья из журнала
Год издания: 2012
Идентификатор DOI: 10.1134/S001670291204009X
Ключевые слова: Kamchatka, Mutnovsky volcano, volcanic gases, mass balance calculations, slab, mantle, continental crust, Continental crusts, Mass-balance calculations, Mutnovsky, Volcanic gas, Gas emissions, Volcanoes, chemical composition, degassing, fumarole, isotopic composition, magma, mass balance, Pacific plate, subduction zone, Russian Federation
Аннотация: Mass balance calculations of volatiles were performed for Mutnovsky volcano, Kamchatka, by comparing the chemical and isotopic compositions of gas emissions with the compositions of the main geochemical reservoirs in the subduction zone using a simple mixing model. The predominant deep component (up to 73% in the highest temperaturПоказать полностьюe fumaroles) is composed of slab fluid released during dehydration of the Pacific Plate. The mantle component does not exceed 2.1%. The fraction of gases from the continental crust varies from 0.5 to 5% depending on the composition of the crustal endmember that was used in the calculations. In terms of the gas composition, Mutnovsky volcano is a typical subduction volcano, but its fluid system has a complex structure. The observed compositional pattern in the volcanic fumaroles can be explained by degassing of two independent magma bodies.
Журнал: GEOCHEMISTRY INTERNATIONAL
Выпуск журнала: Vol. 50, Is. 6
Номера страниц: 502-521
ISSN журнала: 00167029
Место издания: NEW YORK
Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER