Resumen: Se han analizado y comparado las características y posible evolución de las estructuras desarrolladas en la Fm. Alba, o caliza «griotte» carbonífera, en dos afloramientos ubicados en unidades estructurales distintas de la Zona Cantábrica, uno situado en los alrededores de San Emiliano y el otro en las playas de La Ballota y de Andrín. En ambos, la Fm. Alba acomoda deformación en distintos grados mediante el desarrollo de varios tipos de mesoestructuras. Se ha encontrado una serie de similitudes y diferencias entre los afloramientos tanto desde el punto de vista estratigráfico, como estructural. Aparentemente, las características estratigráficas distintas podrían haber sido el factor que ha ejercido una mayor influencia en el comportamiento mecánico a nivel mesoestructural dentro de la Fm. Alba.Palabras clave: calizas «griotte» carboníferas, Zona Cantábrica, pliegues, cabalgamientos.Abstract: We have analysed and compared the features and possible evolution of the structures developed within the Alba Fm., or Carboniferous «griotte» limestone, in two outcrops located in different structural units of the Cantabrian Zone: around San Emiliano and on La Ballota and Andrín beaches. In both outcrops the Alba Fm. accommodates deformation in various degrees by developing different types of mesostructures. We found a number of similarities and differences between the outcrops from the stratigraphic and structural point of view. Apparently, the different stratigraphic features might have been the factor that had exerted a greater influence on the mechanical behaviour at mesostructural scale within the Alba Fm.Keywords: Carboniferous «griotte» limestones, Cantabrian Zone, folds, thrusts.
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