Soils, regoliths and their parent materials were investigated in relation to the developement of badlands (in the Pre-Pyrenees, in NE Spain) on Late Cretaceous mudrocks under a mountain Mediterranean Climate.
Cal Parisa basin (eastern Spain), was selected as a representative of extensive areas on clayey bedrock formerly used for farming, nowadays almost abandoned, where badlands are of great importance as far as sediment production is concerned.