The rate of iron oxide enrichment in arid zone alluvial fan soils, Tunisian southern atlas, measured by mineral magnetic techniques

Auteur(s) et Affiliation(s)



Description :
Rates of iron oxide enrichment of soils on a segmented alluvial fan in southern Tunisia are examined. Mineral magnetic and chemical characteristics of soils developed on 2 dated relict segments and on contemporary alluvium suggest that the rate of Fe-oxide enrichment was more rapid in the Holocene than in the Pleistocene. Thus, Fe-oxide concentration may be used to determine an ordinal chronology of some geomorphological surfaces in drylands, but rates of enrichment cannot be assumed to be uniform over time.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 1997, vol. 30, n°. 2-3, p. 215-227, Collation : Illustration, Références bibliographiques : 67 ref.

Date :
1997

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena