Portal de Periódicos da CAPES

The Cambrian sediments of the Cis-Yenisei basin (West Siberia) : stratigraphy and correlation

2014; Elsevier BV; Volume: 55; Issue: 5-6 Linguagem: Inglês

10.1016/j.rgg.2014.05.013

1878-030X

Yu. F. Filippov, S.V. Saraev, I. V. Korovnikov,

Geological and Geophysical Studies

Abstract A scheme is proposed for the stratigraphic division and correlation of the Cambrian sediments of the Upper Proterozoic–Paleozoic Cis-Yenisei basin. It is based on data from the drilling of parametric wells (Lemok-1, Averinskaya-150, Tyiskaya-1, Vostok-1, Vostok-3, Vostok-4, and others). Two structure-facies zones are recognized in the study area: Kas zone (Lemok-1, Averinskaya-150, Tyiskaya-1, Vostok-4, and Eloguiskaya-1 wells), in which the sedimentary complexes accumulated in a salt subbasin, and Ket’ zone (Vostok-1 and Vostok-3 wells) with open-sea-basin sedimentation. The boundary between the structure-facies zones passes along the reconstructed zone of a barrier reef stretching in the N–S direction. The Vostok-4 well is localized in the western Kas structure-facies zone, at the salt subbasin/barrier reef boundary. Local stratigraphic units (formations) are described and compared with the adjacent Turukhan–Irkut–Olekma facies region of the Siberian Platform.