The geological structure of the Siary zone in the Mutne area based on the lithostratigraphic profile of the Magura nappe between Zwardoń and Sucha Beskidzka (Flysch Carpathians, southern Poland)

In the western part of the flysch Carpathians, in the area between Żywiec and Sucha Beskidzka, Siary Zone composes the outer part of the Magura nappe and overthrusts Fore-Magura Unit and Silesian nappe. Detailed mapping of the Mutne area allows for a new structural interpretation, on the other hand, the lithostratigraphic profile of the investigated region has been corrected. Siary Zone is represents by the Inoceramian beds (Senonian-Paleocene), Mutne sandstones (Paleocene), variegatet shales of the Łabowa Formation (fm.) (Middle Eocene), Hieroglyphic beds (Middle and Upper Eocene), Sub-Magura beds (Middle Eocene-Lower Oligocene?), Magura glauconite sandstones (Upper Eocene-Oligocene), and Supra-Magura beds (Oligocene). These strata build Pewel Wielka, Mutne and Pewel Mała slices of the Magura nappe in the investigated region. The research also shows, that within the Inoceramian beds and Mutne sandstones clasts of the grey marls may probably occur. Formation of these clasts is connected with tectonic activity in the south decline of the Racza cordillere (Andrusov, 1968).