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Large Dinaric karst plateaus in Croatia – differences and similarities as waymarks to understanding their geomorphology

Karst plateaus are, together with karst poljes, the biggest karst landforms in Dinaric karst. They are characterized by polygenetic and polyphase morphogenesis. In the small scale karst plateaus are big flat areas with very low relative relief, but in the large scale there are a lot of differences in the micromorphology. Dinaric karst plateaus can stand by it self like big plateaus or can be parts of the karst-polje depression bottoms or can be small tectonic fragmented and uplifted plateaus in mountainous area. In the Croatian part of the Dinaric karst there are three big karstic plateaus: Istrian plateau (~1400 km2), Karlovac plateau (Una-Korana plateau, ~1300 km2) and North Dalmatian plateau (~1200 km2). This large plateaus spread over almost 4000 km2 (7% of Croatian territory and 15% of Croatian kart area). Past researches were directed on exploration of processes and time of karts plateaus morphogenesis. There were three groups of the theories of the karst plateau genesis: erosion, corrosion and abrasion theories, while time of plateau genesis were assumed in range from Mesozoic to Pleistocene. This research is directed to the comparison of location properties, morphogenetic types and morphometric, geotectonic, geologic, macro and micro geomorphologic characteristics of these three large plateaus. According to differences and similarities of these properties one can make some conclusions of the conditions of the karst plateau genesis.

Dinaric karst; karst plateaus; geomorphology; Croatia

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