Abstract
ABSTRACT Landslide activity is known to be common in the Western Cape mountains and has been documented in a previous study for the Du Toit's Kloof. This study correlates the different geo- environmental factors with the occurrence of landslides in the Du Toit's Kloof. Various geomorphological parameters have been assessed in conjunction with geological and anthropological aspects to evaluate the occurrence of different types of landslides in the area. Eighty landslides were identified, mapped and classified by origin in the field. Each was studied in the context of lithology, slope angle, distance from major shear zones and the proximity to road cuts. The important causes for slope failure were found to be lithology and break in slope angle. The spatial distribution of landslides appears closely related to contact of sandstone and granite where the rock scarp meets the debris slope was a constant flux in the level of segregation.
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