(Biennial Conference. 6th - 1982)

Document title

A note on the dorbanks (duripans) of South Africa in Palaeoecology of Africa and the surrounding islands. Volume 15. Southern African Society for Quaternary research. Proceedings.

Authors(s) and Affiliation(s)

ELLIS F. ; SCHLOMS B. H. A. ; COETZEE J. A. (Editeur scientifique) ; VAN ZINDEREN BAKKER E. M. (Editeur scientifique) ; VOGEL J. L. (Editeur scientifique) ; VOIGT E. A. (Editeur scientifique) ; PARTRIDGE T. C. (Editeur scientifique) ; Southern African Society for Quaternary Research. (SASQUA) ; 


Dorbanks (duripans) are hardened subsurface horizons with reddish brown colours and variable thickness which occur widely in the arid and semi-arid regions of the Cape Province. Both silica and free iron oxides play a role in the cementation of dorbanks. A typical profile has reddish brown, non-calcareous, structureless A and B horizons, underlain by the dorbank, followed directly either by rock or unconsolidated material which may contain calcium carbonate, gypsum, or both. Soils with dorbank occur on near-level terrain (midslopes and footslopes) with slopes rarely exceeding 5 %. There is good evidence that in a specific landscape, dorbanks always occur in the older parts. Investigations so far also indicate that most dorbanks of the arid regions are in equilibrium with present-day soil-forming factors but in some parts of the semi-arid regions (Southern and Eastern Cape) they could be paleosols.



Biennial Conference. 6th ()

ISBN : 90-6191-257-1

Editor : Unknown country of publication (1982)

Millesime : 1982 [pp. 149-157]

Bibliographic references : 18 réf.




Bibliothèque du centre de géographie - Paris

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