Ancient and recent landslides and rockfalls in the Skiby zone of the south-east carpathians and geological regularities of their formation

Abstract

Complex overthrust structures of the Skiby zone in the Ukrainian Carpathians and intensive differentiated neotectonic movements resulted in the development both of old and recent landslides of up to dozens of millions of cubic metres in volume. The landslides occur in terrigenous flysch complexes of Cretaceous and Paleogene age. One of these landslides of about 10–12 million m3 took place in June 1969 in the valley of the Black Cheremosh. Landslides of plastic character (earthflows) are common in this region; their origin depends on the ground-water conditions of slopes. Landslides of any type are characterized from the point of view of the relationship of their occurrence to tectonic structures, geomorphological elements, zone of weathering and ground-water conditions.