Etude d'un aquifère salé de l'Altiplano bolivien par prospection TDEM

Roger Guérin (1) , Marc Descloitres (2) , Anne Coudrain-Ribstein (1) , Amal Talbi (1) , Edson Ramirez (3) , Robert Gallaire (4)

1 SISYPHE - Structure et fonctionnement des systèmes hydriques continentaux
2 LTHE - Laboratoire d'étude des transferts en hydrologie et environnement
3 Instituto de hidraulica e Hidrologia
4 IRD Bolivie

The French researeh program " PNRH Altiplano" is dedicated to the study of the main aquifer in the central part of the Altiplano in Bolîvia. A TDEM survey has been carried out in order to investigate the global resistivity arrangement related to the aquifer. Three ranges of resistivities can be idenlified : 0.1-1 oméga (clays and brines), 1-10 oméga (clays and salt waler),10-50 oméga (clayey to sandy formations). The conductive substratum, outcropping in the south-east part, deepens north-westward to depths of more than 250 m and is related to impermeable layer.

Domains: Sciences of the Universe [physics]; Earth Sciences

Roger Guérin, Marc Descloitres, Anne Coudrain-Ribstein, Amal Talbi, Edson Ramirez, et al.. Etude d'un aquifère salé de l'Altiplano bolivien par prospection TDEM. Pangea infos, 1999, 31/32, pp.26-29. ⟨insu-00958527⟩