The vesicular layer and carbonate collars of desert soils and pavements : formation, age and relation to climate change

Auteurs :
MCFADDEN, L.D.
MCDONALD, E.V.
WELLS, S.G.
ANDERSON, K.
QUADE, J.
FORMAN, S.L.

Description :
The vesicular, fine-grained A horizon (Av) is the widespread, ubiquitous surficial horizon of desert soils in diverse landforms and parent materials of varying ages. Now known to form mostly through accumulation of eolian dust, recent studies show that dust accumulation and concomitant soil development are genetically linked to stone pavement formation. Changes in the magnitude of eolian activity and effective leaching related to Quaternary climatic changes are also hypothesized to have influenced the evolution of the Av horizon. Numerical modeling, geochronologic, and field/laboratory studies elucidate the nature of pedogenic processes.


Type de document :
Article de périodique

Source :
Geomorphology (Amsterdam), issn : 0169-555X, 1998, vol. 24, n°. 2-3, p. 101-145, Collation : Illustration, Références bibliographiques : 4 p.

Date :
1998

Editeur :
Pays édition : Pays-Bas, Amsterdam, Elsevier