Evolution and opening of closed depressions developed in a quartz-kaolinitic sedimentary substratum at Taubaté basin (São Paulo, Brazil), and anlogy to the slope evolution

Paleoweathering and paleolandforms

Auteur(s) et Affiliation(s)



Description :
This study attempts to differentiate the chemical role from that of surface mechanical transport in the evolution of closed depressions and associate valleys. The occurrence of dated peat (17,000-12,500 yr B.P.) in the soil in a closed depression of the Taubaté basin, allowed reconstruction of the evolution of this depression, and estimation of the rate of sinking. Chemical erosion is the main agent for the generation of landforms in this region.


Type de document :
Congrès

Source :
Third International Geomorphology Conference, Hamilton, Canada, 1993-08-26, Geomorphology (Amsterdam), issn : 0169-555X, 1996, vol. 16, n°. 1, p. 77-86, Collation : Illustration, Références bibliographiques : 22 ref.

Date :
1996

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