This Master’s Thesis describes slumps within the Middle Eocene to Early Oligocene Promina Beds in the areas of Karin, Korlat, Novigrad and the Krka and Čikola canyons. Analysis of the investigated deposits and slumps enables the interpretation of sedimentary environments, in which frequent changes in particle size most likely indicate frequent changes in basin conditions. The deposits and the slumps themselves comprise mainly calcarenites and calcilutites and marl to a smaller extent. The investigated Promina Beds were deposited in the Dinaric Foreland Basin, which was folded due to tectonics and consequently differentiated into several asymmetrical sub-basins. The investigated slumps are in the sub-basins of Krka, Čikola, Korlat and Novigrad. Slumps at localities Kistanje, Čikola canyon, Karin and Korlat are oriented towards the SW, while slumps in the area of Ključica and Novigrad are oriented towards the NE. The direction of slumping is generally perpendicular to the strike of the sub-basin margins, and their spatial distribution indicates that the sub-basins were generally steeper along their north-eastern margins, which favoured repeated slumping, caused most likely by syndepositional tectonic activity.