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Identifying instrumental and historical earthquake records in the SW Iberian margin using ²¹⁰Pb turbidite chronology
Garcia i Orellana, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Gràcia, Eulàlia (Centre Mediterrani d'Investigacions Marines i Ambientals. Unitat de Tecnologia Marina)
Vizcaino, Alexis (Centre Mediterrani d'Investigacions Marines i Ambientals. Unitat de Tecnologia Marina)
Masqué Barri, Pere (Universitat Autònoma de Barcelona. Departament de Física)
Olid García, Carolina (Universitat Autònoma de Barcelona. Departament de Física)
Martínez-Ruiz, Francisca (Instituto Andaluz de Ciencias de la Tierra)
Piñero, Elena (Centre Mediterrani d'Investigacions Marines i Ambientals. Unitat de Tecnologia Marina)
Sánchez Cabeza, Joan Albert (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals)
Dañobeitia, Juanjo (Centre Mediterrani d'Investigacions Marines i Ambientals. Unitat de Tecnologia Marina)

Date: 2006
Abstract: Textural, mineralogical and geochemical analyses of near-surface sediments from six different stations offshore SW Iberian Peninsula revealed the presence of thin detrital intervals corresponding to very fine-grained turbidites. Precise dating of the two most recent sedimentary layers based on ²¹⁰ Pb and ¹³⁷ Cs geochronology provides ages of 1971 ± 3 AD and 1908 ± 8 AD. These ages correspond to high-magnitude historical and instrumental earthquakes that occurred in the region: the 1969 Horseshoe Earthquake (Mw 8. 0) and the 1909 Benavente Earthquake (Mw 6. 0). Such a good correlation between turbidites and high-magnitude (Mw > 6) historical and instrumental seismic events suggests that the record of mass transport deposits can also be used as a paleoseismic indicator in low-convergence margins.
Note: Altres ajuts: ESF-EUROMARGINS SWIM project (01-LEG-EMA09F)
Note: Número d'acord de subvenció MCYT/REN2000-2150-E
Note: Número d'acord de subvenció MCYT/REN2002-11234E-MAR
Note: Número d'acord de subvenció MCYT/REN2003-05996-MAR
Rights: Tots els drets reservats
Language: Anglès.
Document: article ; recerca ; publishedVersion
Subject: Earthquakes ; Turbidite
Published in: Geophysical research letters, Vol. 33 Issue 24 (Dec. 2006) , ISSN 0094-8276

DOI: 10.1029/2006GL028417


6 p, 256.7 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > Institut de Ciència i Tecnologia Ambientals (ICTA)
Articles > Research articles
Articles > Published articles

 Record created 2016-06-20, last modified 2019-02-02



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