(Article of periodic en Anglais - 1997)

Document title

Wind erosion of Mancos Shale badland ridges by sudden drops in pressure

Authors(s) and Affiliation(s)

GODFREY A.E. (1) ;
(1) USDA Forest Service, Intermountain Region, Ogden, ETATS-UNIS


One process of erosion of Mancos Shale badlands near Hanksville, Utah, appears to be caused by nearly instantaneous drops in air pressure accompanying gusts of wind. A series of sharp-crested bedrock ridges trend nearly perpendicular to the strong, gusty southwesterly winds that precede cold fronts passing through the area. Soil susceptible to this type of erosion consist of polygonally cracked surface crust averaging 1.2 cm thick overlying a porous subsoil of silt-sized shale chips. The arid environment permits complete soil drying between weather fronts, greatly reducing the cohesion that would occur if the soil were moist


Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 1997, vol. 22, no4 [pp. 345-352]

Bibliographic references : 2 ref.

Collation : Illustration ;




Bureau de recherches géologiques et minières - Orléans

INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1997.
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