Evolution of depositional systems and sedimentary cycles in Želiezovce Depression of the Danube Basin

• Autorzy: Rybar S. , Sarinova K. , Sujan M. , Halasova E. , Hudackova N. , Zlinska A. , Kovac M. , Kovacova M. , Ruman A. , Ledvenyiova L

Identyfikatory

DOI

10.7494/geol.2015.41.1.129

• Konferencja: XVIth International Conference of Young Geologists Her'lany 2015
• Języki publikacji: EN

Abstrakty

EN

Five deep wells (Pozba4, Pozba3, Dubnik1, Nová Vieska1, Modrany1), drilled in the Želiezovce depression of the south-east Danube Basin penetrate the Cenozoic sedimentary record in overall thickness ranging from 1000 m up to 3000 m. The total thickness gradually increases from South to the North. This area is well known for the complex geological structure related to the Central Western Carpathians and Transdanubian Range junction along the Hurbanovo – Diösjenö line. Many authors have studied this area in the past, nevertheless depositional systems, sedimentary cycles and the development of sedimentary facies were never understood in detail. The re-evaluation of biostratigraphy, paleoecology, sedimentology and the reinterpretation of e-logs were all incorporated into well correlations, what resulted in definition of four main sedimentary cycles: (1) the lowermost Oligocene cycle, consisting of mudstones with occasional sandstone intercalations, associated with slope to offshore marine environment. The age is supported by the presence of the NP 22 calcareous nannoplankton zone; (2) the transgressive Langhian (Lower Badenian) deposits, composed of mudstones with epiclastic volcanic material and tuffite beds were associated with nearshore to offshore environement. The age is supported by the NN4–NN5 calcareous nannoplankton zone; (3) the Serravallian (Upper Badenian-Sarmatian) cycle is composed mainly of mudstones with abundant Lithothamnium fragments associated with brackish, coastal pain environment. The age is confirmed by the NN6 calcareous nannoplankton zone and by the mass occurrence of fish scales and Ervilia dissita (Eichwald) bivalves; (4) the overlying strata represent the Tortonian-Pliocene (Pannonian-Pliocene) cycle. The strata consist mostly from claystone (lake environment) which is overlain by sandstone and siltstone layers (deltaic and alluvial plain environments). The Tortonian (Pannonian) age of the lowermost claystone is supported by finds of Dreissenidae bivalves. The Pliocene age is only inferred by superposition of the strata.

Słowa kluczowe

EN

development; sedimentary facies; re-evaluation

• Wydawca: Wydawnictwa AGH
• Czasopismo: Geology, Geophysics and Environment
• Rocznik: 2015
• Tom: Vol. 41, no. 1
• Strony: 129

Twórcy

autor

Rybar S.

• Comenius University in Bratislava, Faculty of Natural Sciences, Department of Geology and Paleontology; Mlynská dolina G, 842 15 Bratislava, Slovakia

autor

Sarinova K.

• Comenius University in Bratislava, Faculty of Natural Sciences, Department of Mineralogy and Petrology; Mlynská dolina G, 842 15 Bratislava, Slovakia

autor

Sujan M.

• Comenius University in Bratislava, Faculty of Natural Sciences, Department of Geology and Paleontology; Mlynská dolina G, 842 15 Bratislava, Slovakia

autor

Halasova E.

• Comenius University in Bratislava, Faculty of Natural Sciences, Department of Geology and Paleontology; Mlynská dolina G, 842 15 Bratislava, Slovakia

autor

Hudackova N.

• Comenius University in Bratislava, Faculty of Natural Sciences, Department of Geology and Paleontology; Mlynská dolina G, 842 15 Bratislava, Slovakia

autor

Zlinska A.

• State Geological Survey of Dionýz Štúr; Mlynská dolina, 1817 04 Bratislava, Slovakia

autor

Kovac M.

• Comenius University in Bratislava, Faculty of Natural Sciences, Department of Geology and Paleontology; Mlynská dolina G, 842 15 Bratislava, Slovakia

autor

Kovacova M.

• Comenius University in Bratislava, Faculty of Natural Sciences, Department of Geology and Paleontology; Mlynská dolina G, 842 15 Bratislava, Slovakia

autor

Ruman A.

• Comenius University in Bratislava, Faculty of Natural Sciences, Department of Geology and Paleontology; Mlynská dolina G, 842 15 Bratislava, Slovakia

autor

Ledvenyiova L

• Comenius University in Bratislava, Faculty of Natural Sciences, Department of Geology and Paleontology; Mlynská dolina G, 842 15 Bratislava, Slovakia