El Cabalgamiento de El Ibor: una falla cuaternaria a 20 km de la Central Nuclear de Almaraz
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Publication date
2021
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Sociedad Geológica de España
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Se describe un cabalgamiento cuaternario, que corta a una brecha sedimentaria que recubre la terraza de +5 m del río Ibor, en el extremo occidental de los Montes de Toledo. El sistema de cabalgamientos descrito ha condicionado la localización de abanicos aluviales fini-neógenos (“raña”), por lo que ha de considerarse como activo durante los últimos 9 Ma. El sismo asociado, superficial, se estima de una magnitud entre M 6-6.5. La rotura se localiza a menos de 20 km de la Central Nuclear de Almaraz (Cáceres).
A Quaternary overthrust is described, intersecting a sedimentary breccia covering the +5 m terrace of the Ibor River, at the western end of the Montes de Toledo. The resulting thrusting system has conditioned the location of fini-neogene alluvial fans ("raña"), so it has to be considered as active during the last 9 Ma. The associated, superficial earthquake is estimated to range between M 6-6.5 in magnitude. The rupture is located less than 20 km from the Almaraz Nuclear Power Plant (Cáceres).
A Quaternary overthrust is described, intersecting a sedimentary breccia covering the +5 m terrace of the Ibor River, at the western end of the Montes de Toledo. The resulting thrusting system has conditioned the location of fini-neogene alluvial fans ("raña"), so it has to be considered as active during the last 9 Ma. The associated, superficial earthquake is estimated to range between M 6-6.5 in magnitude. The rupture is located less than 20 km from the Almaraz Nuclear Power Plant (Cáceres).