Rill initiation : concepts and experimental evaluation on badland slopes in Erosion budgets and their hydrologic basis.

Auteurs :
BOWYER-BOWER, T. A. S.
BRYAN, R. B.

Description :
In the Dinosaur Badlands most surface materials are so dispersive and highly erodible that flow concentration alone is the necessary condition for rill initiation. The experiments carried out in this research project have demonstrated clear differences in the processes of flow concentration on shale and sandstone slopes. Flow concentration and rill initiation apparently will not occur on sandstone slopes which lack a shale cap. Once rills have been initiated, they will continue to develop even if the conditions necessary for their initiation are no longer fulfilled. In the badlands the relationship is exemplified by the continued development of rills on sandstones slopes even after capping shale units have disappeared.


Type de document :
Article de périodique

Source :
Zeitschrift für Geomorphologie. Supplementband, 1986, n°. 60, p. 161-175, Références bibliographiques : 17 réf.

Date :
1986