Budowa geologiczna jednostki dukielskiej na południe od Łupkowa

Abstract

GEOLOGICAL STRUCTURE OF THE DUKLA UNIT, SOUTH OF ŁUPKÓW Summary The area discussed here belongs to the internal part of the Dukla unit. It embraces the southern portion of the Radoszyce-Wola Michowa syncline and, to the south, a part of the scaled off Wysoki Groń anticline, in the fore-field of which a strongly folded zone of menilitic and hieroglyphic beds exists. To the south-east there emerges from this zone the fold of Hyrlata. The oldest member to be seen on the surface are the Łupków beds bunt up of the thin and middle- bedded sandstones. These beds, containing Globigerina kelleri Subb. pass, in their higher part, in to the thick-bedded Cisna sandstones. A portion of the profile is lacking in the area discussed and the next member occurring on the surface is bunt of the uppermost part of the hieroglyphic beds. Higher up, the globigerina marls appear covered, in turn, by the menilite beds. A considerable reduction of the Cergowa sandstones is to be observed in these beds. They make only lenses, some metres in thickness, occurring probably in several horizons. To the east, they disappear completely. These sandstones are also lacking within the southern flank of the Wysoki Groń antictine. The interbeddings of thin-layered sandstones and grey marly shales observed there in the lower part of the menilite beds, probably may correspond with them. As shown by the occurrence of the bryozoan bank, the upper boundary of the menilite beds is lowered to the east, and the beds are replaced by the Krosno facies. Above the menilite beds there occur transition beds, passing in their upper part into the Krosno beds having shaly-sandstone development there.