RT Journal Article T1 La geología de la Cuenca de Madrid en la obra de Casiano de Prado (1797-1866) T1 The Geology of Madrid Basin in the work of Casiano de Prado (1797-1866) A1 Ordóñez, Salvador A1 García del Cura, María Angeles AB After Casiano de Prado the infill of Madrid Basin consists of: the "diluvium" or quaternary deposits which surface and thickness was overestimated in his work, and "fresh water tertiary deposits". In the tertiary deposits he distinguished three units: A calcareous upper unit (Colmenar Stone), a gyspsiferous middle unit (Gypsum of Colmenar), and a lower unit that consists of sandstones and conglomerates which outcroppinng in NE and W of the basin, concordant with cretaceous deposits. In his work has been described convoluted and disturbed evaporite deposits, as well as dolostones and siliceous rocks and sepiolite PB Sociedad Geológica de España YR 1997 FD 1997 LK http://hdl.handle.net/10272/10448 UL http://hdl.handle.net/10272/10448 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 1 jun 2026