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Título

The Diego Cao channel and its morphological depressions (Guadalquivir Bank margin uplift, Gulf of Cadiz). Oceanographic and sedimentary implications

Otros títulosEl Canal de Diego Cao y sus depresiones morfológicas (margen del Banco del Guadalquivir, Golfo de Cádiz). Implicaciones oceanográficas y sedimentológicas
AutorGarcía, Marga ; Hernández-Molina, Francisco J.; Alonso, Belén ; Vázquez, J. T.; Ercilla, Gemma ; Llave, Estefanía; Casas, David
Palabras claveGulf of Cadiz
Contourite depositional systems
Morphological depressions
Seismic stratigraphy
Mediterranean Outflow Water
Fecha de publicación2015
EditorCentro Oceanográfico de Málaga
CitaciónVolumen de comunicaciones presentadas en el VIII Simposio sobre el Margen Ibérico Atlántico: 559-562 (2015)
ResumenThe Diego Cao channel is located on the central-north middle slope of the Gulf of Cadiz. It separates the Bartolomeu Dias and Faro sheeted drift plateaus to the north of the Guadalquivir Bank margin uplift. A striking linear series of circular depressions occur parallel to the channel on the Bartolomeu Dias sheeted drift (western channel flank), while a remarkable amphitheater-shaped escarpment affects the channel eastern flank. Their morphological and high- and medium-resolution stratigraphic analysis allows inferring their origin as the result of a complex interplay between oceanographic (bottom currents), mass-wasting and tectonic processes. All features seem to have a common origin, related to an especially active tectonic phase during the Mid-Pleistocene, probably related to adjustments of the deep structural features. Since then, the action of the bottom currents and the local influence of structural processes have shaped the present-day topography. The Diego Cao channel is re-interpreted as a contourite moat associated to a complex mounded, separated drift that includes the circular depressions. They result from contourite deposition over the erosional surface originated by widespread mass-wasting events during the Mid-Pleistocene
DescripciónVIII Simposio sobre el Margen Ibérico Atlántico (MIA15), del 21 al 23 de septiembre de 2015, Málaga.-- 4 pages, 2 figures
URIhttp://hdl.handle.net/10261/131381
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