The Early Cambrian Age and Crustal Sources of Granitoids of the Goryachinskiy Pluton (Northern Baikal): Geodynamic Implications


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New results of U–Pb zircon and Nd–isotope analyses of the Goryachinskiy Pluton adakite granites have been obtained. The pluton is exposed along the Baikal coast in the section where a section of sheared tectonic sheets of the Baikal–Muya Belt wedges out. The determined Early Cambrian (545 ± 6 Ma) age of the granitoids is unusual in the Northern Baikal region. These new geological and isotopic data are interpreted as an indication of the formation of the granitoids studied at the final stage of the Late Baikal strike–slip tectonics, which caused the pulse of the adakite magmatism within the Baikal–Muya belt.

Sobre autores

E. Rytsk

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: axel-foley@yandex.ru
Rússia, St. Petersburg, 199034

E. Salnikova

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: axel-foley@yandex.ru
Rússia, St. Petersburg, 199034

V. Yarmolyuk

Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences

Email: axel-foley@yandex.ru
Rússia, Moscow, 119017

A. Andreev

Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences

Autor responsável pela correspondência
Email: axel-foley@yandex.ru
Rússia, Moscow, 119017

E. Bogomolov

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: axel-foley@yandex.ru
Rússia, St. Petersburg, 199034

Yu. Lebedeva

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: axel-foley@yandex.ru
Rússia, St. Petersburg, 199034

S. Velikoslavinsky

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: axel-foley@yandex.ru
Rússia, St. Petersburg, 199034

I. Anisimova

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: axel-foley@yandex.ru
Rússia, St. Petersburg, 199034

Yu. Plotkina

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: axel-foley@yandex.ru
Rússia, St. Petersburg, 199034

A. Fedoseenko

Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences

Email: axel-foley@yandex.ru
Rússia, St. Petersburg, 199034

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