Dislocaciones históricas en la terminación suroccidental de la falla de Alhama de Murcia: primeros resultados del estudio paleosísmico

• Eulalia Masana ^[1] ; Hector Perea ^[1] ; M. Ortuño ^[1] ; J. Martínez Díaz ^[1] ; P. Santanach ^[1]
  1. [1] Universitat de Barcelona

     Universitat de Barcelona

     Barcelona, España

     
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 6, 3, 2004 (Ejemplar dedicado a: IV Congreso Geológico de España (Zaragoza, 12-15 julio, 2004)), págs. 167-170
• Idioma: español
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• Resumen

  • The seismogenic nature o f the Alhama de Murcia fault has been proven for the Lorca-Totana segment although nothing is known about the potential rupture across segment boundaries. A paleoseismological study in the southernmost segment is going on to characterize its seismic potential.

    This includes a geomorphological analysis which detected some active faults and a paleoseismological study along one of them: the El Ruchete fault, which included the digging of four trenches.

    Two paleoearthquakes were detected: I) event Y younger than 540 yr AD, and 2) event X which occurred between 39 ka and 780 yr AD with a minimum M w of 6.38± 0.l. Event X can be correlated with the youngest event detected on the Lorca-Totana segment. Further studies are being performed to better characterize the segment behavior along this fault.