Commune: Horyniec-Zdrój (pow. lubaczowski, woj. podkarpackie)
Framework element or context represented:
Miocene deposits of the marginal part of the Carpathian Foredeep basin.
Primary geological/geomorphological interest:
Full succession of the Upper Badenian organodetritic deposits.
Comparative assessment justification:
Most representative profile of the Upper Badenian in Roztocze Hills.
Protection status and accessibility:
Proposed for protection as a documentary site. The quarry well accessible is situated within the Southern Roztocze Landscape Park.
Character of site: Abandoned quarry.
Area: 2 ha
Altitude: 300 m a.s.l.
Lithology: limestones, sands
Discipline: Palaeobiology, Palaeoenvironment, Stratigraphy of Phanerozoic
Process Age: *all periods
Bedrock Age: Neogene, *all periods
Description of primary interest:
There are numerous exposures on the Brusno Hill, the best of which are in a series of vast disused quarries. The section begins with marly Lithothamnium limestones. They are overlain by a thick layer of quartz-glauconite sands, with an admixture of finer fractions, clay minerals and glauconite, and with an increase in the content of organodetritic material. Above it rests a lithologically monotonous, thick set of calcarenites. They are composed of fragments of calcareous algae, foraminifera and variously fractured shells of gastropods and bivalves. Despite the monotonous lithology, these calcarenites exhibit a varied set of sedimentological structures, mainly stratification. Cross- and ripple cross-stratification predominates, accompanied by horizontal and trough cross-stratification. Due to the occurrence in the calcarenites of the index Bolboforma badenenis and Velapertina sp., these deposits were included in the Upper Badenian.
Literature:
BURACZYŃSKI J. 1997–Roztocze: budowa - rzeźba – krajobraz, 1-188. Zakład Geografii Regionalnej UMCS; Lublin. 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) (English sum.). Biul. Geol., 31: 5-149. MUSIAŁ T. 1987b - 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 (English sum.). Prz. Geol., 45: 799-802. RONIEWICZ P., WYSOCKA A. 1999–Sedimentology of the middle Miocene deposits from the north-eastern marginal zone of the Carpathian Foredeep (Englis sum.). Pr. PIG, CLXVIII: 83-97. 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.