Detailed sedimentological profile of the Menilite Beds (Oligocene) in the upper exploitation level of the Skrzydlna quarry, Polish Carpathians

Abstract

In Skrzydlna quarry several depositional acts occurred starting with sandy debris flows which formed conglomerate complex (it explains low amount of silt fraction), to marine landslides – all these forming an olistostrome. The base of the succession there black shales predominate, idicating very low energy of depositional environment. Turbidites in the uppermost part may form a submarine fan. Rock Eval analysis shows that menilite shale is good source rock for generation of oil but a low thickness of this unit is one the reason why in Poland we do not have large oil deposits in this area.