Chronology of Magmatic Activity and Petrologic–Mineralogical Characteristics of Lavas of Kazbek Quaternary Volcano, Greater Caucasus
| Autor: | M. G. Togonidze, Vladimir A. Lebedev, G. T. Vashakidze, A. V. Parfenov, Q. A. Gabarashvili, I. V. Chernyshev |
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| Rok vydání: | 2018 |
| Předmět: |
Basalt
geography geography.geographical_feature_category Fractional crystallization (geology) Lava 020209 energy Andesite Geochemistry 02 engineering and technology 010502 geochemistry & geophysics 01 natural sciences Volcanic rock Volcano Geochemistry and Petrology 0202 electrical engineering electronic engineering information engineering Stratovolcano Volcanic cone Geology 0105 earth and related environmental sciences |
| Zdroj: | Petrology. 26:1-28 |
| ISSN: | 1556-2085 0869-5911 |
| DOI: | 10.1134/s086959111801006x |
| Popis: | The paper presents detailed isotope-geochronological, geological, and petrologic–mineralogical data on lavas of one of the greatest Quaternary magmatic area in the Greater Caucasus, the Kazbek neovolcanic center, including polygenetic Kazbek stratovolcano and a number of subordinate volcanic cones in its vicinities. The research was conducted based on a representative collection of more than 150 geological samples that characterize most of the volcanic cones and lava flows of different age, some of which were known previously, and other were discovered by the authors. The high-precision K–Ar data obtained on these materials make it possible to reproduce the evolutionary history of youngest magmatism at the Kazbek center and evaluate the total duration of this evolution at ~450 ka. The magmatic activity was subdivided into four phases (at 460–380, 310–200, 130–90, and |
| Databáze: | OpenAIRE |
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