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Título

Neogene Through Quaternary Tectonic Reactivation of SW Iberian Passive Margin

AutorZitellini, Nevio; Dañobeitia, Juan José ; Gràcia, Eulàlia ; Bartolomé, Rafael ; Bigsets Team
Palabras claveSouthwest Iberia
Seismic reflection data
Active faulting
Compressional tectonic
Earthquake
Tsunami
Fecha de publicaciónmar-2004
EditorSpringer
CitaciónPure and Applied Geophysics 161(3): 565-587 (2004)
ResumenSouthwest Portugal, the Gulf of Cadiz and Morocco are under the potential threat of natural hazards linked to seismicity and tsunami generation. We report the results of two multi-channel seismic (MCS) surveys carried out in 1992 and 1998 along the continental margin and oceanic crust of SW Iberia. This MCS data set shows the evidence of the compressional deformation which involves both the continental and the oceanic crust of the study area. The area of deformation extends from the southern border of the Tagus Abyssal Plain to the Seine Abyssal Plain, encompassing the continental margin of SW Portugal. Most of the structures observed are probably related to a Mid-Miocene phase of Africa-Europe plate convergence. In this paper we discuss the recent advances on the identification of the tectonic structures that are still active and that may generate great earthquakes and tsunamis. The tectonic structures identified are located respectively at the Guadalquivir Bank, along the eastern border of the Horseshoe Abyssal Plain and along the southern continental slope of SW Portugal
Descripción23 pages, 12 figures.-- IGM contribution No. 1321
Versión del editorhttps://dx.doi.org/10.1007/s00024-003-2463-4
URIhttp://hdl.handle.net/10261/134967
DOI10.1007/s00024-003-2463-4
Identificadoresdoi: 10.1007/s00024-003-2463-4
issn: 0033-4553
e-issn: 1420-9136
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