The Diego Cao channel and its morphological depressions (Guadalquivir Bank margin uplift, Gulf of Cadiz). Oceanographic and sedimentary implications | El Canal de Diego Cao y sus depresiones morfológicas (margen del Banco del Guadalquivir, Golfo de Cádiz). Implicaciones oceanográficas y sedimentológicas
2015
García, M. | Hernández-Molina, F.J. (Francisco Javier) | Alonso, B. (Belén) | Vázquez, J.T. (Juan Tomás) | Ercilla, G. (Gemma) | Llave, E. (Estefanía) | Casas, D.
Английский. The Diego Cao channel is located on the central-north middle slope of the Gulf of Cadiz. Itseparates the Bartolomeu Dias and Faro sheeted drift plateaus to the north of the Guadalquivir Bankmargin uplift. A striking linear series of circular depressions occur parallel to the channel on theBartolomeu Dias sheeted drift (western channel flank), while a remarkable amphitheater-shapedescarpment affects the channel eastern flank. Their morphological and high- and medium-resolutionstratigraphic analysis allows inferring their origin as the result of a complex interplay betweenoceanographic (bottom currents), mass-wasting and tectonic processes. All features seem to have acommon origin, related to an especially active tectonic phase during the Mid-Pleistocene, probablyrelated to adjustments of the deep structural features. Since then, the action of the bottom currentsand the local influence of structural processes have shaped the present-day topography. The DiegoCao channel is re-interpreted as a contourite moat associated to a complex mounded, separateddrift that includes the circular depressions. They result from contourite deposition over the erosionalsurface originated by widespread mass-wasting events during the Mid-Pleistocene.
Показать больше [+] Меньше [-]Испанский язык; кастильский. Versión del editor
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Instituto Español de Oceanografía