Stratigraphy and correlation of Lower-Middle Jurassic sediments in SE West-Siberian petroleum-bearing province

Abstract

Based on the investigation of Lower-Middle Jurassic sediments in SW Siberia, isochron reference clay and coal horizons confined to the roof of chronostratigraphic units were identified; bed series from pre-Jurassic formation bottom to U[10] coal layer were divided; structural features and distribution of regional cyclites J[10]-J[17] in the sequences and throughout the area were determined.