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Sandstone dikes in the Rača unit Slovak Outer flysch belt

Author(s): Martin Udič | Stanislav Jacko

Journal: Acta Montanistica Slovaca
ISSN 1335-1788

Volume: 13;
Issue: 4;
Start page: 435;
Date: 2008;
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Keywords: sandstone dykes | turbidities | Rača Unit | outer flysch belt | Western Carpathians

In the study area by geological mapping we localized Zlín Formation, situated in north - east area of Outer Western Carpathians,near the Nová Polianka village. In Zlín Formation (Middle – Upper Eocene) we have distinguished 3 types of lithofacies - sandstonelithofacies (Makovica sandstones), sandstone - mudstone lithofacies and mudstone lithofacies. Sediments represent part of a deepmarinedeposition system as well as depositional environment of submarine slope. Sandstone intrusions in the Zlín Formation wereinterpreted in terms of their geometry and relating to ambient sediments like sandstone dykes. Their distribution is connected only withmassive mudstone, in which they extend in two vertical directions. The sandstone dikes are evidence of extensional opening faultsand joint systems in time of the sediment deposition of Magura basin. They were injected during tectonic movements connected withthe earliest stage of deformation of the basin in this part. This assumption is supported presence of synsedimentary structures, which aredocumentations of the active basin margin. These are synsedimentary slide solids in overhead part of the Makovica sandstonesand presence of the sediments distribution channel. This indicates the orientation of local dynamic evolution in time of their formation.

Tango Jona
Tangokurs Rapperswil-Jona

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