Análisis de sismicidad histórica en Lorca mediante liquenometría aplicada a caídas de bloqueslos terremotos de 1579 AD, 1674AD y 2011

  1. R. Pérez-López 1
  2. J.J. Martínez-Díaz 2
  3. M.A. Rodríguez-Pascua 1
  4. F. Martín-González 3
  1. 1 IGME- Instituto Geológico y Minero de España
  2. 2 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

  3. 3 Universidad Rey Juan Carlos
    info

    Universidad Rey Juan Carlos

    Madrid, España

    ROR https://ror.org/01v5cv687

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Journal:
Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2012

Issue Title: VIII Congreso Geológico de España, Oviedo, 17-19 de julio, 2012.

Issue: 13

Pages: 1555-1558

Type: Article

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Abstract

Rockfalls generated in the carbonate massifs located northwards of Lorca constituted the most common geological effect triggered by the Lorca earthquake (Mw 5.1, 11th May, 2011). Namely, the “Sierras de las Estancias” range, northwestward of the city, shows a relevant amount of fallen blocks reaching up to 20 m3 in size. Furthermore, in this area ancient fallen blocks have been recognized, which are probably related to historic seismic events. Hence, we have dated the largest ancient blocks by using the lichenometry technique on the horizontal surfaces of these blocks. Preliminary results suggest that the historical earthquake of 1674 could have triggered such cliff collapse. Therefore, we can revaluate the macroseismic geological scale (ESI07) for the 1674 historical earthquake and compare it with the instrumental earthquake of 11th of May (2011) to extrapolate its source parameters.

Data source: Dialnet