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(Article of periodic en Anglais - 2001)

Document title

The role of playas in pedogenic gypsum crust formation in the central Namib Desert : a theoretical model

Authors(s) and Affiliation(s)

ECKARDT F.D. ; DRAKE N. ; GOUDIE A.S. ; WHITE K. ; VILES H.A. ;

Abstract

The formation of Namibia's extensive pedogenic gypsum crusts is interpreted in a new light. It is suggested that gypsum primarily precipates at isolated points of evaporitic concentration, such as inland playas, and that deflation of evaporitic-rich gypsum dust from these playas contributes to the formation of pedogenic gypsum duricrusts on the coastal gravel plains of the Namib Desert surrounding these playas. This study establishes the nature, extent and distribution of playas in the Central Namib Desert and provides evidence for playa gypsum deflation and gravel plain deposition

Source

Article of periodic

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

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

Millesime : 2001, vol. 26, no11 [pp. 1177-1193]

Bibliographic references : 62 ref.

Collation : Illustration ;

Language

Anglais

Localisation

Bureau de recherches géologiques et minières - Orléans

INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2003.
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