Paleogeodynamics of Triassic grabens system formation in the Western Siberia

The obtained data indicate that basaltic effusion in the Pre-Jurassic basement of the Western Siberian Plate began as early as the Permian (probably at the end of the Late Permian), under sublatitudinal compression (i.e., under a collisional regime), probably immediately after or subsynchronously wi...

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Bibliographic Details
Published in:Doklady earth sciences 2014-10, Vol.458 (2), p.1197-1200
Main Authors: Ivanov, K. S., Erokhin, Yu. V.
Format: Article
Language:English
Subjects:
Basalt
Earth and Environmental Science
Earth Sciences
Geology
Geophysics
Graben
Grabens (Geology)
Jurassic
Permian
Plate tectonics
Seismology
Triassic
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Summary:The obtained data indicate that basaltic effusion in the Pre-Jurassic basement of the Western Siberian Plate began as early as the Permian (probably at the end of the Late Permian), under sublatitudinal compression (i.e., under a collisional regime), probably immediately after or subsynchronously with the formation of granites. These basalts filled the grabens formed from such a collision. At the PermianTriassic boundary, collision changed to tension and grabens of submeridional orientation began to form and basaltic effusion reached its peak.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X14100067