Commune: Radziechowy-Wieprz (pow. żywiecki, woj. śląskie)
Framework element or context represented:
The Fore-Magura Unit succession in the Western Carpathians.
Primary geological/geomorphological interest:
Sedimentary structures, stratigraphy and lithology of the Krosno beds in the Fore-Magura zone (Dukla Series).
Comparative assessment justification:
Protection status and accessibility:
The discussed site is proposed to protection as documentary site; it is well accessible.
Character of site: Abandoned quarry.
Area: 1 ha
Altitude: 400-420 m a.s.l.
Lithology: sandstones, marls, shales, silstones, claystones
Discipline: Palaeoenvironment, Stratigraphy of Phanerozoic
Process Age: *all periods
Bedrock Age: Paleogene, *all periods
Description of primary interest:
In the quarry in Przybędza there are outcrops of thick-bedded, medium- and fine-grain mica sandstones of Krosno Beds. These sandstones are laminated which is emphasized by accumulation of muscovite and carbonised plant detritus on lamina planes. Thicker beds of sandstones contain numerous shale fragments occurring are the bottom. The top surfaces of the sandstone beds are not very clear; the sandstones gradually change into mudstones, and then in sandy shales. The Krosno beds belong to the tectonic thrust of the Fore-Magura Series (Dukla Series). This tectonic element is composed with Palaeogene flysch bordered from the south the window of Żywiec built of sequences Subsilesian and Silesian nappes. The Oligocene Krosno Sandstones crop out in the old quarry (50 m long, 20 m high) in Przybędza has different sedimentary structures of turbidite well exposed by weathering. The convolution-bedding and cross-bedding are the most frequent and typical here. The shale menilite and marls occur as fragments above the sandstones. The landslide developed within the red and grey shales of Krosno Beds is situated in the vicinity of quarry.
Literature:
ALEXANDROWICZ Z., POPRAWA D., RĄCZKOWSKI W. 1999–Stratotypes and other important geosites of the Polish Carpathians. Pol. Geol. Inst. Special Papers 2: 33-46. UNRUG R. (ed) 1969–Przewodnik geologiczny po zachodnich Karpatach fliszowych (Polish only). Excur. 6: 87-96.