ŻELEBSKO



Commune: Biłgoraj (pow. biłgorajski, woj. lubelskie)

Framework element or context represented:
Miocene deposits of the marginal part of the Carpathian Foredeep basin.

Primary geological/geomorphological interest:
Succession of sediments at the Badenian - Sarmation boundary.

Comparative assessment justification:
Standard sequence of Upper Badenian/Sarmatian organodetritic deposits in Roztocze Hills.

Protection status and accessibility:
Proposed for protection, well accessible.

Character of site: Quarry

Area: 3 ha

Altitude: 290 m a.s.l.

Lithology: limestones, silts, clays

Discipline: Palaeobiology, Palaeoenvironment, Stratigraphy of Phanerozoic

Process Age: *all periods

Bedrock Age: Neogene, *all periods




Description of primary interest:
There is an active quarry in Żelebsko. A continuous Badenian/Sarmatian transition is visible here. The Badenian deposits are fine- and medium-grained, ripple cross-stratificated calcarenites. This part of the Żelebsko section is overlain, with a small angular unconformity, by a set of thick, massive calcarenites. Above them lie a clay layer with thin intercalations of compact micritic limestones, and a few layers of calcarenites containing scarce, small fragments of serpulid-microbialitic limestones. The deposits included in the Sarmatian are calcarenites, with fragments of serpulids, and marly clays, with lenses of serpulid-microbialitic build ups.

Literature:

BURACZYŃSKI J. 1997–Roztocze: budowa - rzeźba – krajobraz, 1-188. Zakład Geografii Regionalnej UMCS; Lublin.     JASIONOWSKI M. 1996–Sarmatian serpulid – microbialite biuldups in Roztocze (SE Poland): unusual joint - venture. Prz. Geol., 44 (10): 1044-1048. [In Polish]     JASIONOWSKI M. 1998–Sedymentacja i diageneza sarmackich wapieni Roztocza. (PhD thessis). Archiwum PIG. Warszawa.     JASIONOWSKI M., WYSOCKA A. 1997–Middle Miocene algae and microbialites of Roztocze (south-eastern Poland). Guidebook of 3rd Regional Symposium of International Fossil Algae Association, 3rd International Meeting of IGCP 380: 23 – 31. Kraków.     KOZŁOWSKI S. 1961–Current problems of nature conservation in Roztocze in the light of research on its geology and natural resources. Protection of Nature - Ann. 27: 253-272.     MUSIAŁ T. 1987–Miocene of Roztocze (south-eastern Poland). Biul. Geol., 31: 5-149. [In Polish]     MUSIAŁ T. 1987–Lithology and properties of Miocene limestones of the Roztocze as the raw materials. Rozprawy Uniwersytetu Warszawskiego, 265: 1-187. Warszawa.     RONIEWICZ P., WYSOCKA A. 1997–Examples of Miocene cyclic sedimentation – Roztocze, eastern Poland. Prz. Geol., 45: 799-802. [In Polish]    RONIEWICZ P., WYSOCKA A. 1999–Sedimentology of the middle Miocene deposits from the north-eastern marginal zone of the Carpathian Foredeep. Pr. PIG, CLXVIII: 83-97. [In Polish]     SZCZECHURA J. 1998–Mikrofauna z odsłonięć na Roztoczu (Brusno, Huta Różaniecka, Nowiny, Żelebsko) i jej znaczenie biostratygraficzne i paleoekologiczne (unpublished).     WYSOCKA A. 2002–Clastic Badenian deposits and sedimentary environments of the Roztocze Hills across the Polish-Ukrainian border. Acta Geol. Pol., 52: 535-563.