Geomorphological characteristics of the Passage of Lanzarote (East Canary Islands Region).
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AuthorsVázquez, J.T. (Juan Tomás); Palomino, D. (Desirée); Sánchez-Guillamón, O. (Olga); Somoza, L.; Fernández-Puga, M.C.; Fernández-Salas, L.M. (Luis Miguel); Medialdea, T.; Fraile-Nuez, E. (Eugenio); González, F.J.; León, R.; López-González, N. (Nieves)
Editor/sDíaz-del-Río-Español, V. (Víctor); Bárcenas, P.; Fernández-Salas, L.M. (Luis Miguel); López-González, N. (Nieves); Palomino, D. (Desirée); Rueda, J.L. (José Luis); Sánchez-Guillamón, O. (Olga); Vázquez, J.T. (Juan Tomás)
West Africa Margin
The Passage of Lanzarote is an example of a wide oceanic corridor. It extends between the eastern Canary Islands and the Western Africa continental margin. Seafloor morphology of this passage has been analyzed with the aim to know the morphogenetic processes related to both the oceanography and the geology. Multibeam bathymetric data and high and very high resolution seismic profiles obtained in the SUBVENT2 cruise have been used. Five main morphological groups were analyzed: (a) Volcanic or diapiric submarine hills; (b) Tectonic features on the continental slope (linear scarps and a rhomboid-like depression) related to normal faults at the top of buried diapirs; (c) Giant circular depressions initially triggered by submarine venting at the top of diapirs; (d) Sedimentary instabilities and canyons (gullies, canyons, mass transport deposits) that are present specially on the Fuerteventura-Lanzarote ridge must be related to the high energy geological processes, both constructive ...
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