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Eustatic and tectonic controls on Quaternary Ras Leona marine terraces (Strait of Gibraltar, northern Morocco)

AuthorsEl Kadiri, Khalil; Sanz de Galdeano, Carlos CSIC ORCID; Pedrera, A.; Chalouan, Ahmed; Galindo-Zaldívar, Jesús; Julià Brugués, Ramón CSIC; Akil, M.; Hlila, Rachid; Ahmamou, M.
KeywordsMarine terraces
Passive coasts
Active coasts
Strait of Gibraltar
Issue DateSep-2010
CitationQuaternary Research 74(2): 277-288 (2010)
AbstractWell-preserved Quaternary staircased marine terraces appear on Ras Leona limestone relief. This is a peculiar sector of the Betic-Rif Cordillera, lying in the four-way junction between the Atlantic and the Mediterranean, and Europe and Africa. The age and altitude correlation of the Ras Leona terraces with travertine-covered lateral equivalent terraces fashioned in the neighbouring Beni Younech area, and comparison with those along the Moroccan Atlantic coasts, would suggest that the Ras Leona terraces were mainly formed by eustatic factors. The importance of the eustasy is supported by further comparisons with Spanish and Moroccan Mediterranean terraces and with different marine terraces developed on passive-margin coasts around the world. A tectonic event occurred mainly during the period between the formation of the Maarifian and the Ouljian terraces (i.e., between 370 and 150 ka). The moderate Quaternary tectonic uplift deduced from the marine terraces and its comparison with uplifted marine terraces developed in active subduction setting disagrees with the model of an active eastwards subduction below the Gibraltar tectonic arc.
Description12 páginas, 9 figuras, 2 tablas.
Publisher version (URL)http://dx.doi.org/10.1016/j.yqres.2010.06.008
Appears in Collections:(IACT) Artículos
(Geo3Bcn) Artículos
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