Geological setting of the Orlica mountain

Abstract

The Late Carboniferous and the Early Permian beds are devoid of fossil rests, and have been therefore mapped together as the Permo-Carboniferous. They are represented by clay-shales, quartz sandstones and conglomerates. The Middle Permian continental-lagoonal Val Gardena beds consist of red siltstone and claystone. The Lower Triassic is built up by dolomite marl, siltstone and limestone. The Anisian sediment consists of dolomite. The Ladinian includes clayshales, platy limestones, diabase and tuffs. The Norian and the Rhaetian beds exhibit dolomitic facies prevailingly, partly also that of the Dachstein limestone. The Upper Jurassic and the lower part of the Lower Cretaceous are characterized by the Biancone limestone. The marly limestone with chert is Hauterivian and Barremian in age. The Aptian, Albian and the Cenomanian are represented by flysch sediments. The earliest Tertiary sediments, which surround the Orlica mountain, are Egerian quartz sands and sandstones intercalated with claystones and marls. The Badenian, which unconformably overlies the older rocks, consists of the lithothamnian limestone, calcareons sandstone and marl. Sarmatian in age are the calcareous sandstones, sandy and clayey marls and sand. Mari, sand and sandstone appartain to the Pannonian. The Pliocene is represented predominantly by quartz sand. The Orlica mountain and its surroundings belong to the eastern extension of the Sava folds. Tectonically, it is a strongly dissected anticlinal structure in which folded and overthrusted elements are evident, together with numerous faults running NW-SE and SW-NE.