Palaeoecology and sedimentology of the Miocene marine and terrestrial deposits in the “Medieval Quarry” on Devínska Kobyla Hill (Vienna Basin)

Abstract

Dra matic tec tonic and sea level changes of the Cen tral Paratethys realm dur ing the Middle Mio cene re sulted in changes of the coastal and sea bed mor phol ogy af fect ing the com po si tion of the ma rine as so ci a tion and the dis tri bu tion of the fa cies along the coast. Three dif fer ent ep i sodes (ma rine-ter res trial-ma rine) in the en vi ron men tal evo lu tion are in ter preted. A lower ma rine unit (Badenian; Lower Serravallian) re flects organodetrital sed i men ta tion on and around an al gal bioherm. Low terrigenous in put maërl fa cies of typ i cal rhodalgal car bon ate fac tory type char ac ter ise the top of the al gal mound. On the slopes, a rim of rhodechfor fa cies sep a rated the bioherm from the rest of the bot tom which had a sea grass cover. This high-en ergy rhodechfor car bon ate fac tory is de scribed from the Cen tral Paratethys realm for the first time. It is com posed mostly of coralline al gae (Mesophyllum, Lithothamnion, Spongites and Lithophyllum), ben thic foraminifers (Elphidium crispum, Neoconorbina terquemi, Miniacina sp., Borelis melo), echinoids (cidaroid, spatangoid and diadematoid groups) and bryo zoans. Up lift of the Malé Karpaty Mts. re sulted in tec tonic ac tiv ity in the vi cin ity, doc u mented by the pres ence of clastic dikes and nor mal faults in the pro file stud ied. Sub se quent flu vial and ter res trial sed i men ta tion is rep re sented by regolith, palaeosoil and chan nel body de pos its set dis cor dantly on the top of la goonal de pos its. Fi nally, the third ep i sode is rep re sented by the Sarmatian transgressive ma rine se quence, which is characterized by coarse peb bly de posit eroded from an up lifted pre-Neo gene base ment. The strata stud ied orig i nated in a warm tem per ate cli mate around the Badenian-Sarmatian tran si tion.

The Pannonian Basin System northern margin paleogeography, climate and depositional environments in the time range during MMCT (Central Paratethys, Novohrad-Nógrád Basin, Slovakia)

“…(Figures 8, 9). Similar associations of the same age dencka, 1994;Studencka and Jasionowski, 2011;Holcová et al, 2015a) and Vienna Basin (Wiedl et al, 2013;Pivko et al, 2017). The sporadic occurrence of planktic foraminifera, which cannot survive in the shallow coastal environment of the Hámor section, could be transported from the central to marginal part of the basin by surface currents that agrees with the anti-estuarine circulation model suggested for Central Paratethys during NN5 Zone (Báldi, 2006;Kováč et al, 2017).…”

Biostratigraphy and paleoecology of the upper Badenian carbonate and siliciclastic nearshore facies in the Vienna Basin

“…In some samples, Ammonia parkinsoniana and R. spinulosa reach almost 10-25%. A very low portion of agglutinated foraminifers in all studied samples (both in the residuum and thin sections) were obtained in all analyzed samples (Pivko et al 2017;Ruman et al 2017). The average simple species diversity of the studied assemblages is low (SSD 8-9) due to the prevalence of the low diversi ed samples (SSD 4-18).…”

“…These occurrences are delimited to the west by the approximately NE-SW striking Láb fault line, which extends from Lozorno town in the south to Rohožník town in the north (Schaleková 1969(Schaleková , 1973(Schaleková , 1978Benejová 1985;Hladilová 1991;Hrabovský and Fordinál 2013). The Sandberg Formation also appears along the northern margin of Devín town within the SW Vienna Basin (Pivko et al 2017).…”

“…A foraminiferal data of the upper Badenian age were combined, analyzed, correlated, and evaluated with datasets from published results. The listing of additional results is in alphabetical order: Devínska Kobyla Hill (DK) and Sandberg (S) (Hyžný et al 2012;Pivko et al 2017;Ruman et al 2017). In all studied samples from these localities, specimens of the keeled elphidia are the most abundant (obviously exceeding 50%) in the assemblages.…”

“…The most abundant genus identi ed in the studied material is Mesophyllum. Genera Lithothamnion, Lithophyllum, and Spongites are less frequent, while thin encrustations of Titanoderma and Hydrolithon are rare (Pivko et al 2017). In the algal limestones from Merice locality (near Lingula bed), the miliolid forms (Quinqueloculina sp.…”