RT Journal Article T1 Evolución en el subsuelo de los sistemas de abanicos aluviales del Mioceno de la cuenca de Madrid (España) T1 Miocene alluvial fans of the Madrid basin (Spain), subsurface evolution A1 Torres, Trinidad de A1 Maldonado, A. A1 Querol, R. A1 Zamora, I. AB This paper deals on Madrid Basin miocene evolution from drill hole lithologs re-interpretation. To avoid differencial subsidence and tilting, "sand"/"clay" ratios were calculated from 100m tickness intervals.Morphology of isolith lines analysis reveals a multiple alluvial fan system changing throug time PB Sociedad Geológica de España YR 1995 FD 1995 LK http://hdl.handle.net/10272/13514 UL http://hdl.handle.net/10272/13514 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 13 jul 2026