Resumen de Morfotectónica y recurrencia paleosísmica de la zona de falla de El Salvador (segmento del volcán San Vicente)
José Jesús Martínez Díaz, Carolina Canora Catalán, José Antonio Álvarez Gómez, Ramón Capote del Villar, Meaza Tsige Beyene, Marta Bejar Pizarro, Pilar Villamor Pérez, Kelvin R. Berryman
Resúmenes XII Reunión Nacional de Cuaternario, Ávila (2007) 155MORFOTECTÓNICA Y RECURRENCIA PALEOSÍSMICA DE LA ZONA DE FALLA DE EL SALVADOR (SEGMENTO DEL VOLCÁN SAN VICENTE) J.J. Martínez-Díaz (1), C. Canora (1), J. A. Álvarez-Gómez (1), R. Capote (1), M. Tsige (1), M. Béjar (1), P. Villamor (2) y K. Berryman (2) (1) Dpto. de Geodinámica, Universidad Complutense de Madrid. C/ J. Antonio Novais, 2. 28040-Madrid. jmdiaz@geo.ucm.es. (2) GNS Science, Nueva Zelanda. P.Villamor@gns.cri.nz Abstract (Morphotectonics and paleoseismic recurrence of the El Salvador Fault Zone, San Vicente volcano segment):In this work we present the first evidence of paleoseismic activity on the El Salvador Fault Zone, a 150 km long E-W strike-slip fault that was the source of the disastrous Mw 6.6 2001 earthquake of El Salvador. The Holocene activity of this fault deforms the fluvial terraces producing 800 m of cumulative offset of the Jiboa river. Preliminary paleoseismic analysis of the Ilopango-San Vicente segment and the first numerical datings of several displaced paleosoils layers provide evidence of more than two surface-rupturing earthquakes during the past 8100 yr.
