Nuevos datos de actividad paleosísmica de la falla de Alhama de Murcia en el abanico de La salud (segmento Lorca-Totana), Béticas orientales

  1. C. Canora 1
  2. C. Roca 1
  3. J. Martínez-Díaz 1
  4. J.M. Insua-Arévalo 1
  5. F. Martín-González 2
  6. J. Alonso-Henar 1
  7. D. Gómez-Ortiz 2
  8. P. Martínez-Pagan 3
  9. E. Masana 4
  10. M. Ortuño 4
  11. M. Ferrater 4
  12. A. Medialdea 5
  1. 1 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

  2. 2 Universidad Rey Juan Carlos
    info

    Universidad Rey Juan Carlos

    Madrid, España

    ROR https://ror.org/01v5cv687

  3. 3 Univ. Politécnica de Cartagena
  4. 4 Univ. de Barcelona
  5. 5 University of Sheffield
    info

    University of Sheffield

    Sheffield, Reino Unido

    ROR https://ror.org/05krs5044

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Journal:
Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2016

Issue Title: IX CONGRESO GEOLÓGICO DE ESPAÑA

Issue: 16

Pages: 563-566

Type: Article

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Abstract

The Alhama de Murcia Fault (FAM) is a left-lateral strike-slip fault with reverse component. This fault is located in the southeast of Spain and produces the 2011 Lorca earthquake (Mw 5.2), that was the most catastrophic earthquake occurred in Spain in the last 50 years. In this paper we present the analysis of two paleoseismic trenches excavated in La Salud alluvial fan, with the aim to obtain new recurrence data for the eastern section of the Lorca-Totana segment of the fault. The structure that we observed in the trenches is recognizable in the electric tomography and GPR profiles undertaken in the study area. Both the paleoseismic trenches and the geophysics analysis are consistent with the existence of a fault plane dipping 30º to the south. This fault plane deforms the younger fluvial fan deposits. The paleoseismic study indicates the existence of between 3 and 6 surface rupture events in the last 31 ka for this strand of the fault.

Data source: Dialnet