Active faulting in the central Betic Cordillera (Spain): Palaeoseismological constraint of the surface-rupturing history of the Baza Fault (Central Betic Cordillera, Iberian Peninsula)
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Título: | Active faulting in the central Betic Cordillera (Spain): Palaeoseismological constraint of the surface-rupturing history of the Baza Fault (Central Betic Cordillera, Iberian Peninsula) |
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Autor/es: | Castro, Julia | Martin-Rojas, Ivan | Medina-Cascales, Iván | García Tortosa, Francisco Juan | Alfaro García, Pedro | Insua-Arévalo, Juan Miguel |
Grupo/s de investigación o GITE: | Evolución Geodinámica de la Cordillera Bética Oriental y de la Plataforma Marina de Alicante |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ciencias de la Tierra y del Medio Ambiente |
Palabras clave: | Active tectonics | Palaeoseismicity | Recurrence interval | Baza Fault |
Área/s de conocimiento: | Geodinámica Interna |
Fecha de publicación: | 20-jun-2018 |
Editor: | Elsevier |
Cita bibliográfica: | Tectonophysics. 2018, 736: 15-30. doi:10.1016/j.tecto.2018.04.010 |
Resumen: | This paper on the Baza Fault provides the first palaeoseismic data from trenches in the central sector of the Betic Cordillera (S Spain), one of the most tectonically active areas of the Iberian Peninsula. With the palaeoseismological data we constructed time-stratigraphic OxCal models that yield probability density functions (PDFs) of individual palaeoseismic event timing. We analysed PDF overlap to quantitatively correlate the walls and site events into a single earthquake chronology. We assembled a surface-rupturing history of the Baza Fault for the last ca. 45,000 years. We postulated six alternative surface rupturing histories including 8–9 fault-wide earthquakes. We calculated fault-wide earthquake recurrence intervals using Monte Carlo. This analysis yielded a 4750–5150 yr recurrence interval. Finally, compared our results with the results from empirical relationships. Our results will provide a basis for future analyses of more of other active normal faults in this region. Moreover, our results will be essential for improving earthquake-probability assessments in Spain, where palaeoseismic data are scarce. |
Patrocinador/es: | This research was founded by the Spanish Ministry of Economics, Industry and Competitiveness (MINECO) research Projects CGL2011-30153-C02-02 and EPILATES (CGL2015-65602-R). Also by the research group VIGROB053 (University of Alicante), the research Project UJA2014/06/17 (Caja Rural de Jaén and University of Jaen) and the research contract 2015CL015 (University of Jaen). |
URI: | http://hdl.handle.net/10045/75494 |
ISSN: | 0040-1951 (Print) | 1879-3266 (Online) |
DOI: | 10.1016/j.tecto.2018.04.010 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2018 Elsevier B.V. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.tecto.2018.04.010 |
Aparece en las colecciones: | INV - GEODIN - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2018_Castro_etal_Tectonophysics_final.pdf | Versión final (acceso restringido) | 5,06 MB | Adobe PDF | Abrir Solicitar una copia |
2018_Castro_etal_Tectonophysics_accepted.pdf | Accepted Manuscript (acceso abierto) | 27,53 MB | Adobe PDF | Abrir Vista previa |
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