Email this article Conditions of formation of Paleozoic picrite basalt complexes of the basement of the Western Siberian Plate
- Authors: Simonov V.A.1,2, Kontorovich V.A.2,3, Stupakov S.I.1, Filippov Y.F.3, Saraev S.V.3, Kotlyarov A.V.1
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Affiliations:
- Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
- Novosibirsk State University
- Trofimuk Institute of Petroleum Geology and Geophysics Sibirian Branch of the Russian Academy of Sciences
- Issue: Vol 486, No 5 (2019)
- Pages: 577-582
- Section: Geology
- URL: https://journals.eco-vector.com/0869-5652/article/view/14487
- DOI: https://doi.org/10.31857/S0869-56524865577-582
- ID: 14487
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Abstract
The carried out researches with the help of 40Ar/39Ar analysis have shown a coincidence of formation (about 490 million years) of Paleozoic picrite and basalt complexes of the basement of the Western Siberian Plate. The data on petrochemistry, geochemistry of rare and rare-earth elements, and also on compositions of clinopyroxenes, testifies to formation of picrites of borehole № 11 (Chkalovsky area) as a result of action of intra plate magmatic systems of oceanic islands - OIB. Calculations on the basis of clinopyroxene compositions speak about considerable parameters of crystallization of picrite porphyrite minerals: 1215-1275 °C, 4.5-8 kbar. As a whole, it is established that considered picrite basalt complexes were formed with the assistance of enriched plume magmatic systems in intra plate conditions of ancient ocean near to its active margin.
About the authors
V. A. Simonov
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences; Novosibirsk State University
Email: stupakov@igm.nsc.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090; 1, Pirogova street, Novosibirsk, 630090
V. A. Kontorovich
Novosibirsk State University; Trofimuk Institute of Petroleum Geology and Geophysics Sibirian Branch of the Russian Academy of Sciences
Email: stupakov@igm.nsc.ru
Corresponding Member of the Russian Academy of Sciences
Russian Federation, 1, Pirogova street, Novosibirsk, 630090; 3, Koptyg prosrect, Novosibirsk, 630090S. I. Stupakov
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Author for correspondence.
Email: stupakov@igm.nsc.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090
Yu. F. Filippov
Trofimuk Institute of Petroleum Geology and Geophysics Sibirian Branch of the Russian Academy of Sciences
Email: PhilippovYF@ipgg.nsc.ru
Russian Federation, 3, Koptyg prosrect, Novosibirsk, 630090
S. V. Saraev
Trofimuk Institute of Petroleum Geology and Geophysics Sibirian Branch of the Russian Academy of Sciences
Email: stupakov@igm.nsc.ru
Russian Federation, 3, Koptyg prosrect, Novosibirsk, 630090
A. V. Kotlyarov
Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences
Email: stupakov@igm.nsc.ru
Russian Federation, 3, Koptyug prospect, Novosibirsk, 630090
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