The potentially active Porak neovolcanic center (Lesser Caucasus, Armenia): The composition of lavas and melt sources

In this paper we report the first results of petrological and isotopegeochemical studies of young lavas of the Porak neovolcanic center within the eastern part of the potentially active Vardenis volcanic area of the Lesser Caucasus (Armenia). According to a number of material characteristics, the ne...

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Bibliographic Details
Published in:Doklady earth sciences 2014-11, Vol.459 (1), p.1365-1370
Main Authors: Bubnov, S. N., Lebedev, V. A., Chernyshev, I. V., Sagatelyan, A. K., Dokuchaev, A. Ya, Gol’tsman, Yu. V., Oleinikova, T. I., Griboedova, I. G.
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Geochemistry
Isotopes
Magmatism
Petrogenesis
Petrology
Volcanoes
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Summary:In this paper we report the first results of petrological and isotopegeochemical studies of young lavas of the Porak neovolcanic center within the eastern part of the potentially active Vardenis volcanic area of the Lesser Caucasus (Armenia). According to a number of material characteristics, the newest lavas of the Porak neovolcanic center are close to the continental intraplate formations. These characteristics are consistent with the ideas on the regional deep mantle reservoir of the OIB type as a source of primary melts for lavas of the center and provide evidence for the significant role of assimilation by the crustal material in their petrogenesis.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X14110014