Evolución del sistema fluvial Jarama-Lozoya-Guadalix durante el Plioceno final y el Cuaternario.

This paper deals with the jarama-Lozoya-Cuadalix fluvial system evolution during the Pliocene and Pleistocene times. Duringt the Upper Pliocene and Lower Pleistocene time the Lozoya river was under incission and fluviokarst regimen' atthe Middle Pleistocene beginning time (Cromer) aftera local tectonic even the jarama river shifted northwards and Lozoya river filled the ''Huesos'' cave with large amounts ofmammal remains. Reduena alluvial fans were still active during the Upper Riss time, but because of local titling later became unactive.