Email this article Early Jurassic magmatism of the Kobyuminsky system of grabens (Verkhoyansk frame of the Siberian platform) and its geodynamic nature
- Authors: Kiselev A.I.1, Yarmolyuk V.V.2
-
Affiliations:
- Institute of the Earth`s Crust of the Siberian Branch of the Russian Academy of Sciences
- Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
- Issue: Vol 484, No 5 (2019)
- Pages: 584-588
- Section: Geology
- URL: https://journals.eco-vector.com/0869-5652/article/view/12777
- DOI: https://doi.org/10.31857/S0869-56524845584-588
- ID: 12777
Cite item
Full Text
Abstract
The Kobyuminsky system of grabens was formed in the Early Jurassic within the Verkhoyansk passive margin of the Siberian platform. The volcanic complex of grabens is represented by basalts with elevated TiO2 contents (> 1.8 wt%). According to geochemical characteristics, the rocks of the volcanic series occupy an intermediate position between the basalts of the oceanic islands (OIB) and the basalt-rich mid-oceanic ridges (E-MORB). The data obtained led to the conclusion that the Kobuminsky system of grabens within the passive margin of the Siberian continent arose in connection with the activity of a small mantle plume.
About the authors
A. I. Kiselev
Institute of the Earth`s Crust of the Siberian Branch of the Russian Academy of Sciences
Author for correspondence.
Email: akiselev@crust.irk.ru
Russian Federation, 128, Lermontova street, Irkutsk, 664033
V. V. Yarmolyuk
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
Email: akiselev@crust.irk.ru
Academician of the RAS
Russian Federation, 35, Staromonetny, Moscow, 119017References
- Тектоника, геодинамика и металлогения территории Республики Саха (Якутия) / Под ред. М.И. Кузьмина, Л.М. Парфенова. М.: МАИК Наука/Интерпериодика, 2001. 627 с.
- Layer P.W., Newberry R., Fujita K., Parfenov L.M. // Geology. 2001. V. 29. P. 167–170.
- Летникова Е.Ф., Изох А.Э., Николенко Е.И. и др. // ДАН. 2014. Т. 459. № 3. С. 327–331.
- Macdonald J.A, Katsura I. // J. Petrol. 1964. V. 5. № 1. P. 82–133.
- Rudnick R.L., Fountain D.M. // Rev. Geophys. 1995. V. 33. P. 267—309.
- Sun S.S., McDonough D. // Geol. Soc. Spec. Amer. Publ. 1989. № 42. P. 313–345.
- Pearce J.A. Continental Basalt and Mantle Xenolith. Nantwich; Shiwa, 1983. P. 230–249.
Supplementary files
