Gullying and the age of badlands: an application of the erosional susceptibility model Es
Badland ; Domaine méditerranéen ; Erosion des sols ; Modèle ; Mouvement de masse ; Ravinement ; Ruissellement ; Versant ; Végétation
Badland ; Gully erosion ; Mass movement ; Mediterranean area ; Model ; Rill wash ; Slope ; Soil erosion ; Vegetation
In this paper Es is discussed for gullying and badland formation. Data from world literature have been collected and an Es-g table is presented from which interpolated values can be derived for prediction or postdiction. Applied to Mediterranean
badlands the latter operation yields a minimal age between 2,700 and 40,000 years which dates badlands in this belt back eventually to Upper Pleistocene times. Therefore, this application of the Es model is offered as a contribution to the still ongoing
discussion on the origin of badlands and their age.
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.
Une estimation du taux d'érosion a été effectuée dans deux régions de badlands du Bassin de l'Ebre (« El Barranco » et « La Charca »), en utilisant des techniques de mesures directes.
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.
Explication des principes de base du modèle Es qui représente la susceptibilité à l'érosion de bassins-versants et ses applications au ravinement y compris les badlands, et au système rigoles-interrigoles qui érode le plus souvent des terres