Herrero, A.2020-05-132020-05-132004http://hdl.handle.net/10272/17938They are analized the electric logs of a several wells located in the region northwest of the Duero Basin. These wells cross the upper 700 m of the Candanedo Aloestratigraphic Unit (Mansilla Formation). In them are differentiated three principal electrofacies: river channel, flood plain and of progradational lobe. The electrosequential analysis shows the retrogradation of the distal facies on proximal facies in upper part of the unitspaAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Duero BasinTertiaryMansilla formationElectrofaciesElectric logsjournal articleopen access