Microgranulometric approach to a chalk karst, western Paris Basin, France

Auteurs :
LACROIX, M.
RODET, J.
WANG, H.
LAIGNEL, B.
DUPONT, J.P.

Description :
The AA. have studied the chalk karsts of Haute Normandie by comparing microgranulometric spectra of suspended matter (SM), in subterranean waters and in solutions of the main surface formations (Clay-with-Flints Complex (CFC) and loess) and the Chalk dissolution products of all local stratigraphic levels. Based on these microgranulometric spectra, they propose a conceptual model for processes occurring in chalk karsts and a classification scheme for karstified systems according to how such systems deal with particles. In a closed karst, the suspended matter tends to come from the Chalk itself, while in the case of an open karst, the majority of suspended particles comes from surface formations.


Type de document :
Article de périodique

Source :
Geomorphology (Amsterdam), issn : 0169-555X, 2002, vol. 44, n°. 1-2, p. 1-17, nombre de pages : 17, Collation : Illustration, Références bibliographiques : 38 ref.

Date :
2002

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