2024-03-29T02:33:30Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/187032019-04-08T13:54:26Zcom_10261_91com_10261_8com_10261_126col_10261_344col_10261_379
DIGITAL.CSIC
author
García-Orellana, Jordi
author
Gràcia, Eulàlia
author
Vizcaino, A.
author
Masqué, Pere
author
Olid, Carolina
author
Martínez Ruíz, Francisca C.
author
Piñero, Elena
author
Sanchez-Cabeza, Joan-Albert
author
Dañobeitia, Juan José
2009-11-17T08:39:52Z
2009-11-17T08:39:52Z
2006-12-16
Geophysical Research Letters 33: L24601 (2006)
8755-1209
http://hdl.handle.net/10261/18703
10.1029/2006GL028417
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 210Pb and 137Cs 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.
eng
closedAccess
Identifying instrumental and historical earthquake records in the SW Iberian margin using 210Pb turbidite chronology.
artículo
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