IGB

Connexion

(Proceedings of the International Conference of the International Society of Soil Science - 1982)

Document title

Distribution, nature and probable genesis of silcrete in arid and semi-arid southern Africa in Aridic soils and geomorphic processes.

Authors(s) and Affiliation(s)

SUMMERFIELD M. A. ; YAALON D. H. (Editeur scientifique) ;

Abstract

Silica precipitation may occur in response to concentration through evaporation or a localised decrease in pH in alcaline environments, although the common supersaturation of surface and groundwaters with respect to quartz could allow precipitation from slowly migrating pore solutions without changing environmental conditions. Although many Kalahari silcretes are clearly relict, a number of occurences, particularly of pan silcretes, appear to have formed comparatively recently. While the detailed climatic record for the Kalahari is uncertain, silcrete formation throughout the Cenozoic appears to have been associated with an arid to semi-arid climate.

Source

Congrès

Proceedings of the International Conference of the International Society of Soil Science ()

ISBN : 3-923381-00-X

Editor : Unknown country of publication (1982)

Millesime : 1982 [pp. 37-65]

Bibliographic references : 68 réf.

Language

Anglais

Localisation

Bibliothèque du centre de géographie - Paris

Refdoc record number (ud2m) : 12541650 : Permanent link - XML version
Powered by Pxxo