REFINEMENT OF CAMBRIAN STRATIGRAPHY OF BAKHTA AREA, TURUKHANIRKUTSK-OLEKMINSK REGION OF THE SIBERIAN PLATFORM (AS PER RESULTS OF INVESTIGATION INTO THE NIZHNEIMBAKSKAYA 219 PARAMETRIC WELL DATA)

N. V. Melnikov, O. S. Shabanova, I. E. Goryayeva

New parametric well, Nizhneimbakskaya 219, was bored in western Tynep facies region identified based on composition of Cambrian deposits within the Bakhta area. The well penetrated salt and carbonate Cambrian strata. Trilobites obtained from the core enabled drawing boundaries of the Amga and Maya stages of mid-Cambrian. The paper gives a brief description of the Cambrian part of the section and paleontological substantiation of stages, horizons, and trilobite zones age.

Key words: Bakhta area, Tynep facies region, Cambrian deposits, stratigraphy, stage, trilobites.

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