Villamor, P.Capote, RamónTsige, Meaza2016-06-272016-06-271996http://hdl.handle.net/10272/12417Signs of recent tectonic activity are found at the Extremadura sector of Alentejo-Plasencia fault. This fault was active during the alpine compressional period as a sinistraI strike-slip fault at the foreland of a collisional zone and presents some activity from the Miocene to the Quaternary. Upper «Raña» deposits of Early Villafranquian age, present an around-2-meter-vertical-displacement at the north border of Alburquerque granitic massif. Close to this point old fluvial terraces of unknown age are folded and faulted, and low terraces (3 m above present river course) are jointed. In the tertiary Cañaveral pull-apart basin , at the Alcantara reservoir border, the fault disrupts a Tagus river fluvial terrace, which lies 80 m above the river course and has a probable Middle Pleistocene age. All these observations imply a vertical displacement which could be related to a slip rate less than 0.007 mm/year. If this fault is compared with other active faults of the Hesperian Massif, such as the Braganga-Manteigas one, it becomes clear that Alentejo-Plasencia fault is less active. There are though paleoseismicity structures associated to the Alentejo-Plasencia fault, such as liquefaction featurespaAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Alentejo-Plasencia FaulNeotectonic activityAlluvial terraceRañaSlip ratePaleoseismicityjournal articleopen access