RT Journal Article T1 Estudio morfoestructural de la red de drenaje en la cuenca de Almazán A1 Fernández García, Paloma A1 Rey Moral, C. A1 Babín Vich, Rosa Blanca A1 Tejero López, Rosa AB Almazan Basin, localised in the northeastern part of the Iberian Plate, shows a characteristic drainage network formed by the Duero river, E-W trend in the main part of it trajectory, shifting suddenly into a N-S trend by the Almazan town. The morphological study based on a map subenvelopes and some asymmetry index suggest a relation with the N20a-30aE Spanish Central System tectonic trend. Moreover, the study of the morphologic surfaces, longitudinal profiles and the main faults, reveal a major river incision in the south slope, while the north slope tributaries fit into a more tectonically stable area. These two remarkable areas would be divided by a major uneveness, E-W trend, located underneath the Duero river. Present fluvial network is controlled by NW-SE and E-W to WNW-ESE fault systems. PB Sociedad Geológica de España. SN 1576-5172 YR 2004 FD 2004 LK https://hdl.handle.net/20.500.14352/52540 UL https://hdl.handle.net/20.500.14352/52540 LA spa NO Ministerio de Ciencia y Tecnología. DS Docta Complutense RD 25 feb 2026