Mots-clés
Action biogène ; British Columbia ; Canada ; Etats-Unis ; Grès ; Littoral ; Météorisation ; Oregon ; Sel ; Taffoni ; Vitesse d'érosion ; Washington StateBiogenic process ; British Columbia ; Canada ; Coastal environment ; Erosion rate ; Oregon ; Salt ; Sandstone ; Taffoni ; United States of America ; Washington State ; WeatheringAcción biógena ; Canada ; Colombia Británica ; Estado de Washington ; Estados Unidos ; Granizo ; Litoral ; Meteorización ; Sal ; Taffoni ; Velocidad de erosiónBiogenic origin of coastal honeycomb weathering
Auteur(s) et Affiliation(s)
MUSTOE, G.E.
Geology Dep., Western Washington Univ., Bellingham, Etats-Unis
Description :
Honeycomb weathering occurs in two environments in Late Cretaceous and Eocene sandstone outcrops along the coastlines of south-west Oregon and north-west Washington, USA, and south-west British Columbia, Canada. In both environments, cavity development is initiated by salt weathering. In the intertidal zone, cavity shapes and sizes are primarily controlled by wetting/drying cycle. In the supratidal spray zone, honeycomb weathering results from a dynamic balance between the corrosive action of salt and the protective effects of endolithic microbes. Cavity patterns produced by complex interactions between inorganic processes and biologic activity provide a geological model of ‘self-organization’. Surface hardening is not a factor in honeycomb formation at these study sites.
Type de document :
Article de périodique
Source :
Earth surface processes and landforms, issn : 0197-9337, 2010, vol. 35, n°. 4, p. 424-434, nombre de pages : 11, Références bibliographiques : 41 ref.
Date :
2010
Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)