Commune: Kraśnik (pow. kraśnicki, woj. lubelskie) , Kraśnik (pow. kraśnicki, woj. lubelskie)
Framework element or context represented:
Middle Vistula section of the Upper Cretaceous.
Primary geological/geomorphological interest:
Opoka facies of Turonian.
Comparative assessment justification:
Opoczka section near Annopol is the best exposure of the typical opoka facies with flints and cherts.
Protection status and accessibility:
Outcrop is proposed to protection as documentary site. The long outcrop is very accessible.
Character of site: Abandoned quarries.
Area: 2 ha
Altitude: 150 m a.s.l.
Lithology: other siliceous rocks
Discipline: Palaeobiology, Palaeoenvironment, Stratigraphy of Phanerozoic
Process Age: *all periods
Bedrock Age: Cretaceous, *all periods
Description of primary interest:
The abandoned quarries in Opoczka near Annopol situated close to one another in the eastern, steep banks of the Vistula river. The quarries expose the Upper Turonian rocks at the southern limb of the Annopol brachyanticline located in the southern part of the middle Vistula valley. The whole exposed succession represents opokas with cherts, a unit introduced by Pożarski (1948), and comprising the whole Upper Turonian. The unit is poorly fossiliferous. It contains rare inoceramids and ammonites (from these quarries come large Lewesiceras specimens exposed in the Geological Museum of the Polish Geological Institute in Warsaw). The referred site is important for the studies of the Turonian in the region.
Literature:
POŻARSKI W. 1948–Jurassic and Cretaceous between Radom, Zawichost and Kraśnik (English sum.). Biuletyn Państwowego Instytutu Geologicznego, 46: 1-141. WALASZCZYK I. 1992–Turonian through Santonian deposits of the Central Polish Upland; their facies development, inoceramid paleontology and stratigraphy. Acta Geologica Polonica, 42 (1-2): 1-122. WALASZCZYK J., CIEŚLIŃSKI S., SYLWESTRZAK H. 1999–Selected geosites of Cretaceous deposits in Central and Eastern Poland. Pol. Geol. Inst. Special Papers 2: 71-76.