Abstract
Movement type of landslides seems to be affected by clay fraction (CF) of landslide materials. Landslide susceptibilty will be also predictable by the clay fraction
In mudstone areas, the highest potential of landsliding will be induced by reduction of shear strength in landslide materials to residual strength and elevation of water level up to the slope surface. Safety factor and critical slope angle in this case are determined.
The safety factor is relatively low in the areas of high susceptibility which is inferred from clay fraction (CF). Those areas usually have large difference between the critical slope angle and a real dip of a slope.
