The analysis of spatial distributions, origins of caldera-forming eruptions with basaltic-andesitic magma compositions, and genesis of Miocene ignimbrites of the Eastern volcanic belt, Kamchatka
Based on the statistical data of the Global Volcanism Program of the Smithsonian Institution and published materials, we present a comparative analysis of caldera-forming eruptions on global scale. The geodynamic settings and genesis of the caldera-forming eruptions with basaltic-andesitic magma com...
| Published in: | Geodynamics & Tectonophysics |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English Russian |
| Published: |
Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2019
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| Subjects: | |
| Online Access: | https://doi.org/10.5800/GT-2019-10-3-0443 https://doaj.org/article/1c8a412aac8e4488bbf548039e13675e |
| Summary: | Based on the statistical data of the Global Volcanism Program of the Smithsonian Institution and published materials, we present a comparative analysis of caldera-forming eruptions on global scale. The geodynamic settings and genesis of the caldera-forming eruptions with basaltic-andesitic magma compositions are described. The origin of the majority of mafic ignimbrites was related with external water. Such ignimbrites were generated in a submarine environment or with a contact with water. The newly obtained data, paleogeodynamic reconstruction and geological mapping of Miocene mafic ignimbrites of the Eastern volcanic belt (EVB) of Kamchatka confirm their genesis in costal-marine environment. These new data show significance of paleoreconstructions in studies of paleo-volcanoes and relief-forming pyroclastic rocks. |
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