La Falla de Granada en el contexto de fallas activas normales de alto y bajo buzamiento de la Cuenca de Granada (Sur de Iberia)

  1. A. Madarieta-Txurruka 1
  2. J. Galindo-Zaldívar 1
  3. L. González-Castillo 1
  4. J.A. Peláez 2
  5. A.M. Ruiz- Armenteros 2
  6. J. Henares 3
  7. M.S. Garrido-Carretero 2
  8. M. Avilés 2
  9. A.J. Gil 2
  10. C. Sanz de Galdeano 4
  1. 1 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

  2. 2 Universidad de Jaén
    info

    Universidad de Jaén

    Jaén, España

    ROR https://ror.org/0122p5f64

  3. 3 Universidad Internacional de La Rioja
    info

    Universidad Internacional de La Rioja

    Logroño, España

    ROR https://ror.org/029gnnp81

  4. 4 Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR)
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Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Año de publicación: 2021

Título del ejemplar: X Congreso Geológico de España

Número: 18

Páginas: 88

Tipo: Artículo

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Otras publicaciones en: Geotemas (Madrid)

Resumen

The Central Betic Cordillera is an active seismic zone affected by the NW-SE Eurasia-Nubia convergence and the orthogonal extension responsible for the development of the Granada Basin. Field geological and geophysical (gravity, electrical-resis- tivity tomography and seismicity) research reveal that the northeastern boundary of the basin is defined by a set of high- and low-angle normal faults. These faults are rooted about 10 km deep to the southwest. The earthquakes of greater magnitude are related to low-angle faults instead of outcropping high-angle ones. The Granada Fault is the most active one of the system. Its activity has also been studied on the surface, by means of two high precision leveling profiles. The fault shows different behaviors depending on its location. Northward it reaches the surface and generates an escarpment, whereas sou- thward it is related to a set of small blind faults. Both cases suggest a shallow dominant creep fault behavior that changes to seismic one in depth. The combination of geological, geophysical and geodetic techniques allows an accurate characterization of the active struc- tures in the NE of the Granada Basin. This interdisciplinary study has a great interest in the analysis of the seismic hazard of the region.

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