Teťák F., 2017: Neogene sediments between Podbranč and Hradište pod Vrátnom, Vienna Basin. Acta Geologica Slovaca, 9, 1, 1–14.

Neogene sediments between Podbranč and Hradište pod Vrátnom, Vienna Basin

František Teťák

State Geological Institute of Dionýz Štúr, Mlynská dolina 1, 817 04 Bratislava, Slovakia; frantisek.tetak@gmail.com


The geological mapping and research during the year 2008 was carried out in the eastern part of the Vienna Basin in the area between Podbranč and Hradište pod Vrátnom. Sedimentological profiles, interpretation of geological structure and geological evolution during the Neogene (Eggenburgian – Karpatian) are the main results of the research. The purpose of this article is to present the geological structure of this area as well as new findings from the geological research not included in previous work. Sedimentation in this region took place during the Neogene in two cycles. Both cycles started by deposition of conglomerates. Transgressive deposits represent monomict carbonate breccias, conglomerates and sandstones lacking in fauna of the Brezová Mb. Fine- to medium-grained sandstones with shells of Chropov Mb. overlie Flysch units. Polymict conglomerates and sandstones occur on the places where they overlie the Pieniny Klippen Belt. They are overlain by the younger sandstone facies with polymict conglomeratic sandstone. The first cycle terminated with basinal sandstone-silty facies. Sedimentation of the second cycle developed in conglomerate facies, sandstone facies and thin-bedded facies. Presence of all the three facies with abundant polymict conglomerates is typical in the lower part of the second cycle (Jablonica Fm.). Subsequently deposited sandstones intercalated with thin-bedded facies without conglomerates. They represent the Prietrž Mb. Seven paleocurrent measurements of Jablonica Fm. sandstones confirm paleocurrent transport of deposits from the SW.

Key words: Neogene, Vienna Basin, sedimentology, conglomerates, delta, littoral

Manuscript received: 2017-02-03

Revised version accepted: 2017-06-13

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