engleski

Brus Landslide, translational block sliding in flysch rock mass

The Brus Landslide occurred in April 2005, near village Brus in Istria, Croatia. The Landslide is a typical translational block slide and the landslide body consists of practically unique flysch rock mass block, 150 m long and 35 m wide. Sliding occurred abruptly, without previous announcement signs of possible instability. The area of North Istria is composed of flysch deposits of Paleogene age. Superficial deposits are made of considerable thick packages, with alternating layers of siltstones, marls and sandstones. Landslide body is composed of flysch rock mass which is 10 m thick. Sliding surface is formed through bedding planes of siltstone layers. The sliding was caused by the unfavorable dip orientation of deposit layers in the slope, and additionally by the river erosion in the toe in combination with unfavorable hydrogeological conditions.

Brus landslide; translational block slide; flysch rock mass

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