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Cambrian events in the history of the different terranes comprising mosaic-block geological structures of the Altai-Sayan Folded Area is discussed. On the basis of the complex analysis of the paleontological, lithological and paleomagnetic data, the probable territorial proximity of the Biya-Katun' (Gorny Altai) and Bateny (Kuznetsky Alatau) blocks is proved.
An extended Vendian-Cambrian island-arc system similar to the Izu-Bonin-Mariana type is described in the Gorny Altai terrane at the margin of the Siberian continent. Three different tectonic stages in the terrane are recognized. (1) A set of ensimatic active margins including subducted oceanic crust of the Paleo-Asian ocean, the Uimen-Lebed primitive island arc, oceanic islands and seamounts: the...
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