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Russian Geology and Geophysics

2003 year, number 1-2

LATE DEVONIAN PALEOGEOGRAPHY OF THE WEST SIBERIAN PLAIN AND ITS MOUNTAINOUS SURROUNDINGS

E.A. Yolkin, N.K. Bakharev, N.G. Izokh, N.P. Kirda, A.G. Klets, V.A. Kontorovich, O.T. Obut, and I.G. Timokhina
Institute of Oil and Gas Geology, Siberian Branch of the RAS, 3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia
Keywords: Paleogeography, facies, Late Devonian, West Siberia
Pages: 169-180

Abstract

A Late Devonian paleogeographic reconstruction for the territory of the West Siberian Plate and the surrounding regions of Altai-Sayan orogenic area and Siberian Platform is based on lithology and facies of Upper Devonian deposits. Zones of continental and shallow and deep water marine deposition are interpreted as continental, shelf, and oceanic-type offshore environments. As a result of correlation of revised regional stratigraphic charts for the Upper Devonian, the Kuznetsk basin is proposed as a reference region for the West Siberian Plate, the Siberian Platform, and Siberia as a whole. The reconstruction includes reliably timed volcanism in the West Siberian Plate. The Kolyvan'-Tom' fold belt has not been outlined as it evolved into an independent structural element during the final stage of the Hercynian orogeny.