Deformaciones pseudodúctiles en régimen frágil en una falla activa lentaLa falla de Alhama de Murcia. Implicaciones sismotectónicas

  1. E. Rodríguez-Escudero 1
  2. J.J. Martínez-Díaz 1
  3. M. Tsige 1
  1. 1 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Ano de publicación: 2012

Título do exemplar: VIII Congreso Geológico de España, Oviedo, 17-19 de julio, 2012.

Número: 13

Páxinas: 1531-1534

Tipo: Artigo

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Outras publicacións en: Geotemas (Madrid)

Resumo

The Alhama de Murcia fault (FAM) is a major fault located in the SE Betic Range. It records seismic activity all over its length except in the Puerto Lumbreras-Lorca Segment (SPL) where seismicity is almost absent. The Puerto Lumbreras-Lorca Segment is characterized by the presence of a complex shear zone where a significant thickness of clay-rich fault rock (fault gouge) is developed. This fault gouge and the materials included in the shear zone display textures that are typical of ductile fault rocks. However the micro-tectonic study of the fault gouge reveals that it was formed under a brittle regime. For this reason, textural and microstructural studies of the fault gouge are very important to understand the SPL seismotectonic behavior and how it could accommodate deformation by aseismic creep.

Fonte de datos: Dialnet