RT Journal Article T1 Utilización de testificación geofísica en la clasificación geotècnica de las facies detríticas de la cuenca de Madrid T1 Geophisical logging application to the geotechnical clasification of Madrid basin detritic facies A1 Fernández Fuentes, I. M. A1 Cuéllar Mirasol, V. AB This paper sets the relationship between geophysical parameters and geotechnical properties of the detritic materials from the Madrid Basin. The geophysical parameters have been obtained from geophysical logging made in twenty seven boreholes.The geophysical parameters Natural Gamma-ray and Conductivity have been selected in this research due to their direct relationship with some soils index properties (granulometry, plasticity).The regression coefficients obtained in this study justify the possible use of geophysical logging to classify the grounds from a geotechnical point of view PB Sociedad Geológica de España YR 1996 FD 1996 LK http://hdl.handle.net/10272/12924 UL http://hdl.handle.net/10272/12924 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 31 may 2026