MAGMA CHAMBERS BENEATH THE KLYUCHEVSKOY VOLCANIC GROUP

Show simple item record

dc.contributor.author Khubunaya S.A. en
dc.contributor.author Gontovaya L.I. en
dc.contributor.author Sobolev A.V. en
dc.contributor.author Nizkous I.V. en
dc.date.accessioned 2019-03-04T03:59:01Z
dc.date.available 2019-03-04T03:59:01Z
dc.date.issued 2007
dc.identifier.citation Вулканология и сейсмология, 2007, № 2, с. 1–23 ru_RU
dc.identifier.uri https://repository.geologyscience.ru/handle/123456789/458
dc.description.abstract A 3D velocity model of the Earth's crust beneath the Klyuchevskoy volcanic group has been constructed using the seismic tomography method. Anomalies of the velocity parameters related to the zones of magma supply to active volcanoes have been distinguished. Petrological data on the composition, temperature, and pressure of generation and crystallization of primary melts of Klyuchevskoy volcano magnesian basalts have been obtained. The primary melt corresponds to picrite (MgO = 13-14 wt %) with an ultimate saturation of SiO2 (49-50 wt %), a high H2O content (2.2-2.9%), and incompatible elements (Sr, Rb, Ba, Hf). This melt is formed at pressures of 15-20 kbar and temperatures of 1280--1320С . Its further crystallization proceeds in intermediate magma chambers at two discrete pressure levels (i.e., greater than 6, and 1-2 kbar). The results of the petrological studies are in good agreement with the seismotomographic model. ru_RU
dc.language Английский ru_RU
dc.relation.ispartof Journal of Volcanology and Seismology ru_RU
dc.subject 38.37.19 Магматизм и магматические горные породы ru_RU
dc.subject 38.37.25 Вулканология ru_RU
dc.subject Ключевской ru_RU
dc.title MAGMA CHAMBERS BENEATH THE KLYUCHEVSKOY VOLCANIC GROUP en
dc.type Статья, тезисы доклада ru_RU
dc.subject.udc 550.34, 552.321.6+552.335


Files in this item

This item appears in the following Collection(s)

Show simple item record