Debris flows; Fossil and recent accumulations; Medium-high mountains; Moravskoslezské Beskydy mountains

The significance of debris flows for the morphogenesis of the medium-high mountains of Central Europe has long been neglected. Herein we provide evidence from the oravskoslezské Beskydy Mountains (flysch Western Carpathians, Czech Republic) where ossil (Pleistocene) debris-flow events (in spite of heir low recent activity) were important erosion and accumulation agents in shaping the ountainous terrain. Geomorphological and sedimentological analyses helped to differentiate between two classes of debris-flow deposits. Deposits of the 1st class are relatively oluminous contemporary terraced landforms which originated in the Pleistocene transport-limited onditions. Recent activity of debris flows, resented by the 2nd-class accumulations, is haracterized by the presence of low-magnitude vents, mostly originated during the reworking of older diamictons.