Commune: Iwierzyce (pow. ropczycko-sędziszowski, woj. podkarpackie)
Framework element or context represented:
Flora and fauna of Miocene biohermal limestones.
Primary geological/geomorphological interest:
Lithothamnium reef and organodetrital limestone deposits.
Comparative assessment justification:
Stratotyp of Badenian lithothamnium facies. An example of reef, back-reef and organodetrital limestones deposits on Carpathian sediments. Deposits of similar type arounded Rzeszów Bay. There were also recognised towards the E in vicinity of Dynów and Dubiecko as well as on the SE slopes of Holy Cross Mts. and on Roztocze Hills in Poland and Ukraine (Miodobory).
Protection status and accessibility:
Proposed for protection as documentary site.
Character of site: Abandoned quarry.
Area: 1.5 ha
Altitude: 320-330 m a.s.l.
Lithology: limestones
Discipline: Palaeobiology, Palaeoenvironment, Stratigraphy of Phanerozoic
Process Age: *all periods
Bedrock Age: Neogene, *all periods
Description of primary interest:
The site in Olimpów is a big, abandoned quarry with sizes about 100x150 m and a depth of about10 m, lying on the top of an elevation situated SW of the village centre in the Kamieniec hamlet. The best outcrops are in its SE part, developed as a complex of thick-bedded limestones of the Lower Badenian age of the Niechobrz Formation. They rest monoclinally with the general bearings 15/15-20/E; some small faults are also present. The rocks of the Olimpów site are mainly built of the lithothamnium fragments, with minor fragments of bryozoa, large foraminifers, mollusks (bivalves, snails), polyhaeta, echinodermata, and others. There occur both typical reef sediments (bioherms) and organodetrital limestones, also those with rodolites of the back reef type. They were deposited in the litoral and sublitoral zones of the Miocene sea on deformed and eroded flysch strata of the Outer Carpathians. The nearest rocks of this type can be found in the so-called Rzeszów bay; their thickness reaches 30 m. The bedrock of Miocene patches near Rzeszów is formed of the Skole Unit flysh. The organodetrital limestones were folded with the flysh during the latest tectonic movements of the Carpathians. These deposits represent the S margin of the Miocene sea of the Carpathian orogen.
Literature:
CHLEBOWSKI T., OBTUŁOWICZ J. & WDOWIARZ J. 1937–Carte géologique des Karpathes Occidentales dans les environs dr Rzeszów, Tycztn et Ropczyce. (French sum.). Kosmos, 62 A: 669-683. FRIEDBERG W. 1903–Das Miocäne Becken von Rzeszów. (Polish only). Cz I. Rozprawy AU, 43 B: 219-272. FRIEDBERG W. 1906–Das Miocäne Becken von Rzeszów. (Polish only). Cz. II. Rozpr. AU, 46 A: 103-128. FRIEDBERG W. 1948–A contribution to the cnowledge of the Miocene of Poland. Part IV. (English sum.). Rocz. Pol. Tow. Geol., 17: 223-235. GOLONKA J. 1981–The algae and the biosedimentation of the Miocene limestones of the environs of Rzeszów). (English sum.). Biul. Państw. Inst. Geol., 332: 5-46. GOŁĄB J. 1932–Contributions á la connaissance de la géologie des environs de Niechobrz. (French sum.). Rocz. Pol. Tow. Geol., 8/1: 18-41. GONERA M. 1994–Miocene carbonate platforms in the Polish Carpathians (Central Parathetys). Foraminiferal records. Geol. Méditer., 21: 37-47. KOTLARCZYK. J.1991–Problematyka batymetrii basenu molasowego w neogenie. (Polish only). In: Kotlarczyk J. (red.) Paleontologia a batymetria. Materiały XIV Konf. Paleont. w Karpatach Rzeszowskich: 65-71. MAŁECKI J. 1971–Chlorophyta from Miocene sediments of Poland. (English sum.). Rocz. Pol. Tow. Geol., 40/1: 167-175. NIEDŹWIEDZKI J. 1891–Miocen koło Rzeszowa. (Polish only). Kosmos, 15. NOWAK J. 1947–The Miocene of the northe border of the Carpathian. (English sum.). Rocz. Pol. Tow. Geol., 17: 1-38. URBANIAK J. 1977–Macrofauna of Miocene epositts overlying the Carpathian flysh in the Dubiecko area. (English sum.). Przegl. Geol., 25: 367-371.