Zona de falla en la región epicentral de la serie sísmica de Torreperogil-Sabiote (2012-2013)

• F.J. García Tortosa ^[1] ; J.A. Peláez ^[1] ; M. Sáchez Gómez ^[1] ; Fernando Pérez Valera ^[1] ; Carlos Sanz de Galdeano ^[2]
  1. [1] Universidad de Jaén

     Universidad de Jaén

     Jaén, España

     
  2. [2] Universidad de Granada

     Universidad de Granada

     Granada, España

     
• Localización: El Cuaternario Ibérico: investigación en el s. XXI: VIII Reunión de Cuaternario Ibérico (Sevilla - La Rinconada 2013) / Rafael Baena Escudero (ed. lit.), José Juan Fernández Caro (ed. lit.), Inmaculada Guerrero Amador (ed. lit.), 2013, ISBN 978-84-695-8601-3, págs. 181-184
• Idioma: español
• Títulos paralelos:
  • Fault zones in the epicentral area of the Torreperogil-Sabiote seismic series
• Texto completo no disponible (Saber más ...)
• Resumen

  • Since October 2012, to May 2013, more than 2100 earthquakes have been recorded in the vicinity of the towns of Torreperogil and Sabiote, in the easternmost part of the Guadalquivir Basin. Most of them are located at depths ranging between 2 and 5 km, below the Mesozoic cover. The biggest event had magnitude 3.9 mbLg, and the entire series released an energy equivalent to a 4.4 mbLg shock. From a tectonic point of view, specific studies in the region are barely available due to the apparently scarce deformation of the Mesozoic and Cenozoic cover. However, some hydrogeological studies and the re-interpretation of former seismic reflection profiles, reveal blind faults in the Variscan basement also the cover. After a detailed survey of the epicentral area, we have verified the existence of some fault zones, the most important one striking N-S. In this fault zone, a tectonic fabric with left lateral sense is observed, nevertheless it is also possible to observe dip-slip movements. Its strike and kinematics are in agreement with one of the fault planes for the only computed focal mechanism.