The weathering of basaltic rocks in Burundi and Vietnam

Lateritization processes and supergene ore formation

Auteurs :
SCHIRRMEISTER, L.
STÖRR, M.
SCHWARTZ, T.

Description :
Various stages of tropical weathering are described using a number of examples of red soil formation derived from rif basalts in Burundi and laterite bauxites from plateau basalts of South Vietnam. The phenomena of decomposition of primary minerals are comparable in the two regions. The gradients of chemical activities in the micro-environment (surfaces of grains, pores, microfissures) seem to be the controlling factors of weathering.


Type de document :
Congrès

Source :
Meeting. 5th International Eurolat meeting, Berlin, Allemagne, 1991-08-01, Catena (Giessen), issn : 0341-8162, 1994, vol. 21, n°. 2-3, p. 243-256, Collation : Illustration, Références bibliographiques : 32 ref.

Date :
1994

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