Ridge-top trenches and rifts in the Polish Outer Carpathians

Abstract

Rowy grzbietowe i rozpadliny w polskich Karpatach fliszowych In the Polish Outer Carpathians narrow and elongated depressions of various size occur on ridge crests and slopes, as well as on sandstone tors. They include ridge-top trenches with accompanying double ridges, rifts, as well as corridors and fissure caves. The distribution and geological setting of these forms suggest that they are genetically related to gravitational displacement of rock masses. Ridge trenches, rifts, and rock corridors frequently accompany large landslides and rock-slides, although occasionally they are the sole manifestations of mass movements.