Active faulting and earthquakes in the central Alboran Sea
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AuthorsGalindo-Zaldívar, J.; Estrada, F.; Ercilla, G.; Vázquez, J.T. (Juan Tomás); Azzouz, O.; d'Acremont, E.; Sanz de Galdeano, C.; Gorini, Ch.; Benmakhlouf, M.; Alonso, B.; Chalouan, A.; Gil, A.J.
Central Alboran Sea constitutes a key area to analyze the relationships between active tectonic structures and moderate seismicity. The heterogeneous crustal layered structure and the propagation of the deformation along the fault zones are key features to relate active faults and seismic hazard. The NW-SE oblique convergence between Eurasian and African plates determines the broad band of tectonic deformation and seismicity along the Alboran Sea basin (westernmost Mediterranean). The Betic-Rif Cordilleras are connected through the Gibraltar Arc and surround the Alboran Sea formed by thinned continental crust. This basin is filled since the Neogene by sedimentary and volcanic rocks. Central Alboran Sea is now undergoing shortening and is mainly deformed by a system of conjugated WNW-ESE dextral and NE-SW sinistral faults with recent activity formed by indenter tectonics related to a heterogeneous crustal behavior. In addition a NNW-SSE normal fault set and large ENE-WSW folds deform the ...
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