RT Journal Article T1 Reconocimiento geoeléctrico de paleovalles en la depresión terciaria de Ciudad Rodrigo T1 Geoelectrical recognition of paleo-valleys in Ciudad Rodrigo Tertiary depression A1 Corrochano, A. A1 Andrés, M. F. A1 Barba, Pedro A1 Curiel, N. A1 Armenteros, Ildefonso AB The V.E.S. (vertical electrical sounding) study undertaken in the Ciudad Rodrigo Craben unravels the structure and the lithology of the graben infill. The basement resistivity values (200-350 Qm) indicate the presence of NW-SE oriented paleovalleys which were responsible for the tertiary drainage. The resistivity values of the tertiary rocks show the presence of sandstones and conglomerates (40-70 Qm), sand and clay (20-30 ?m) and claystone (10-18 ?m). Each of these groups can be correlated to Paleogene and Neogene rocks according to surface observations PB Sociedad Geológica de España YR 2000 FD 2000 LK http://hdl.handle.net/10272/9830 UL http://hdl.handle.net/10272/9830 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026