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The Ortegal spur contourite depositional dystem (Bay of Biscay): the implications of the Mediterranean Outflow Waters in sedimentary processes and cold-water coral ecosystems

AuthorsHernández-Molina, Francisco J.; Nombela, Miguel Ángel; Van Rooij, D.; Rosón, Gabriel; Ercilla, Gemma ; Urgorri, V. ; Llave, Estefanía; Francés, G.; De Mol, L.; Mena, Anxo; Pérez-Arlucea, Marta; Alejo, I.; Jane, G.; Vanreusel, Ann
KeywordsSistema deposicional contornítico
Contourite depositional system
Corriente mediterránea de salida
Mediterranean Outflow Water
Margen continental del norte de Iberia
North Iberian continental margin
Issue Date12-Feb-2010
CitationVI Simposio sobre el Margen Ibérico Atlántico MIA09: 281-284 (2009)
AbstractThis contribution aims to illustrate the Ortegal Cape Contourite Depositional System (OCCDS), a new example of contourites located on the northern Galicia margin generated by the Mediterranean Outflow Water (MOW) influence. This work is based on several datasets collected during two multidisciplinary cruises, including: single echosounder and swath bathymetry data, high and middle resolution reflection seismic profiles, sediment samples and CTD data. Both depositional and erosive features reflect an intense MOW interaction with the sea floor along the slope that has conditioned the occurrence of important local contouritic processes and the building of cold-water coral ecosystems.
DescriptionThis study illustrates the occurrence of a Contourite Depositional System (CDS) at Ortegal Spur (northern Galicia margin, Bay of Biscay), between 43.7ºN-44.35º N and 8.25º W-9.25ºW. The study area corresponds with a fishing ground named “A Selva” which extends 70 miles northwest from Ferrol. This area is characterised by a well defined upper and middle slope, under the influence of the Mediterranean Outflow Water (MOW).
Appears in Collections:(ICM) Comunicaciones congresos
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