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Relation between Karst and Fluviokarst Relief on the Slunj Plateau (Croatia)
Neven Bočić - (32/2,2003)
The Slunj plateau is part of the shallow Kordun karst. It extends from the westernmost part of river Una towards the northwest to the confluence of the Slunjč, ica and Korana, at an average height of 300 - 350 m of above sea level. It is 40 km long, and averages about 10 km wide. A larger part of the plateau of Jurassic and Cretaceous carbonate rocks has characteristics of e karst relief with numerous dolines. On the smaller part of the Paleozoic and Tertiary clastic sediments and Triassic dolomites, a surface fluvial network has been developed. The water streams emerging on that basis regularly disappear underground on contact with permeable rocks. During geomorphological evolution of this terrain the area which is being drained on the surface was reduced, and the traces were left in the form of blind and dry (fossil) valleys. The water streams moved from the surface to underground where they formed the underground channels, i. e. speleological objects. This work analyses the correlation between the formation processes of (today fossil) valleys and cave channels on three examples: 1) Cave system Mate�ić , eva - Popovač, ka cave, 2) Ponor pod Kremenom cave and Barić , eve cave, 3) Cave system Varić , akova - Panjkova cave.
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