J. Phys. IV France
Volume 107, May 2003
Page(s) 233 - 236

J. Phys. IV France
107 (2003) 233
DOI: 10.1051/jp4:20030285

Remobilisation of Zn and Pb in a mountain stream contaminated by mining wastes during a moderate flood event (Ariège, France)

C. Brunel, M. Munoz and A. Probst

Laboratoire de Mécanismes de Transfert en Géologie, UMR 5563 du CNRS, 38 rue des 36 Ponts, Toulouse, France

The Lez stream drains an orphan mining (Zn and Pb) district, whose tailings are sources of contamination. The evolution of the dissolved and particular Zn and Pb content was studied to evaluate the role of a moderate flood event on the downstream metal tranfert. Although Zn and Pb behave differently, floods appear for both elements as preferential periods for metal fluxes .

© EDP Sciences 2003