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La bordure est du Bassin précaspien et le bassin d'avant-pays de l'Oural (Kazakhstan) au Carbonifère et Permien inférieur

Talgat ENSEPBAEV, Alain IZART, Michel CATHELINEAU, Geroi JOLTAEV, Daniel VACHARD & Zinula BOULEKBAEV

fr Geodiversitas 20 (4) - Pages 687-700

Published on 30 December 1998

The eastern border of the Precaspian Basin and the foreland Ural Basin (Kazakhstan) during the Carboniferous and lower Permian.

Stratigraphic correlations are proposed after micropaleontology (fusulinids), sismic reflexions, well logging and sedimentology. The eastern border of the Precaspian Basin exhibits during the Carboniferous, an eastern carbonated platform and a western turbiditic basin interrupted by a horst and during the lower Permian a turbiditic basin interrupted by a horst. The Preuralian Basin located eastwards shows a turbiditic basin during the Carboniferous and the lower Permian. A shifting of the depocenters is observed from the Preuralian Basin to the Precaspian Basin between the Carboniferous and the lower Permian during the western progress of the nappe structures.

Keywords :

Peri-Tethys, stratigraphy, sedimentology, Carboniferous, Permian, Precaspian Basin, Preuralian Basin, Kazakhstan