A New Ectasian Event of Basitic Magmatism in the Southern Siberian Craton


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Resumo

On the basis of U–Pb dating of zircon and baddeleyite from gabbro–dolerite of the Goloustnaya dyke swarm (southern margin of the Siberian Craton), the age of basites was established as 1338.0 ± 2.9 Ma. It is shown that the basite intrusions of close ages from the Goloustnaya and Listvyanka areas (southern Siberian Craton) and Victoria Island (northern Laurentia, Barking Dog complex) could have been formed under the influence of the same mantle plume and belong to the same Large Igneous Province of Ectasian (Middle Mesoproterozoic) age.

Sobre autores

D. Gladkochub

Institute of the Earth’s Crust, Siberian Branch
of the Russian Academy of Sciences; Irkutsk Scientific Center, Siberian Branch, Russian Academy of Sciences; Irkutsk State University

Autor responsável pela correspondência
Email: gladkochub@mail.ru
Rússia, Irkutsk; Irkutsk, 664033; Irkutsk, 664033

T. Donskaya

Institute of the Earth’s Crust, Siberian Branch
of the Russian Academy of Sciences

Email: gladkochub@mail.ru
Rússia, Irkutsk

R. Ernst

Carleton University; Tomsk State University

Email: gladkochub@mail.ru
Canadá, Ottawa; Tomsk

M. Hamilton

University of Toronto

Email: gladkochub@mail.ru
Canadá, Toronto

A. Mazukabzov

Institute of the Earth’s Crust, Siberian Branch
of the Russian Academy of Sciences

Email: gladkochub@mail.ru
Rússia, Irkutsk

S. Pisarevsky

Curtin University

Email: gladkochub@mail.ru
Austrália, Perth

S. Kamo

University of Toronto

Email: gladkochub@mail.ru
Canadá, Toronto

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