This paper presents new data for the structure and age of the Paleozoic rocks in the Ikat-Bagdarin zone of the West Transbaikalia region. Reported for the first time is the wide development of various Devonian and Carboniferous rocks. A model is proposed for the tectonic evolution of this structural zone, based on the view that the Tocher rift basin began to form during the Late Devonian in the Caledonian basement and was completed during the Late Carboniferous-Early Permian in connection with the formation of the nappe-fold structure of the region and with the intrusion of the Angara-Vitim batholith granites.
Tectonics, continental crust, accretion, Transbaikalia.
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