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.
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