Spatial migration of magmatic activity within the Caucasian segment of the Alpine belt in the early neogene under the conditions of geotectonic setting change: Isotope-geochronological data

The Miocene epoch is the most important, possibly key time range in the Cenozoic history of the Eurasian-Arabian collisional zone (EACZ), in which the Neotethys oceanic basin was finally closed, subduction under the folded structures of the Pontic Mountains and Lesser Caucasis was finished, and the...

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Bibliographic Details
Published in:Doklady earth sciences 2013-02, Vol.448 (2), p.225-231
Main Authors: Lebedev, V. A., Volkov, V. N., Sagatelyan, A. K., Chernyshev, I. V.
Format: Article
Language:English
Subjects:
Cenozoic
Continental dynamics
Continental margins
Earth and Environmental Science
Earth Sciences
Geochemistry
Isotopes
Magma
Miocene
Mountains
Neogene
Ocean basins
Plate tectonics
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Summary:The Miocene epoch is the most important, possibly key time range in the Cenozoic history of the Eurasian-Arabian collisional zone (EACZ), in which the Neotethys oceanic basin was finally closed, subduction under the folded structures of the Pontic Mountains and Lesser Caucasis was finished, and the rigid stage of convergence between the closed lithospheric plates and microplates and, consequently, uplift and the formation of grandiose mountain chains and large plateau of the Caucasus segment within the Alpine Himalayan folded belt (AHB) started. Change in the regional geotectonic setting resulted in the evolution of the character of volcanic activity in this part of the Earth from supersubduction magmatism of the continental margin to the typical continental intraplate magmatism.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X13020141