Martin-Rojas, Ivan, García Tortosa, Francisco Juan, Medina-Cascales, Iván, Alfaro García, Pedro
Palaeoseismological record of the active Galera Fault (Central Betic Cordillera, Spain)
Martín-Rojas, I., et al. “Palaeoseismological record of the active Galera Fault (Central Betic Cordillera, Spain)”. En: Martín, Iván, et al. (eds.). Iberfault 2022: IV Reunión Ibérica sobre Fallas Activas y Paleosismología, Teruel, 7 al 10 de septiembre de 2022. Volumen de resúmenes. Zaragoza: Departamento de Ciencias de la Tierra, Universidad de Zaragoza, 2022. ISBN 978-84-18321-58-0, pp. 95-98
URI: http://hdl.handle.net/10045/136015
DOI: 
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ISBN: 978-84-18321-58-0
Abstract: 
In this study we provide the first palaeoseismological data for the Galera Fault, an active strike-slip fault located in the Central Betic Cordillera. one of the most tectonically active areas of the Iberian Peninsula. We analysed palaeoseismological trenches in two sites located in the central sector of the fault, where we identified evidence of several surface rupture events deforming recent Holocene deposits. After constraining the age of these deposits, we constructed time-stratigraphic OxCal models that resulted in probability density functions (PDFs) of the ages of each palaeoevent. Analysing the degree of overlap of PDFs between the two sites, we proposed a surface-rupturing history for the Galera Fault, including seven events since ca. 24000 BC. Finally, through a Monte Carlo simulation, we calculated recurrence intervals of ca. 2748 ± 3419 yr between events. Our results, together with the palaeoseismological data of adjacent structures, will be the base for improve future seismic hazard assessments in the study area.
Keywords:Strike-slip, Active tectonics, Surface rupturing history, Recurrence interval, Betic Cordillera
Universidad de Zaragoza. Departamento de Ciencias de la Tierra
info:eu-repo/semantics/conferenceObject