Palaeoceanographic implications of current-controlled sedimentation in the Alboran Sea after the opening of the Strait of Gibraltar
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AuthorsJuan-Valenzuela, C. (Carmen); Ercilla, G. (Gemma); Hernández-Molina, F.J. (Francisco Javier); Estrada, F. (Ferrán); Alonso, B. (Belén); Casas, D. (David); García, M.; Farrán, M. (Marcel.li); Llave, E. (Estefanía); Palomino, D. (Desirée); Vázquez, J.T. (Juan Tomás); Medialdea, T. (Teresa); Gorini, C. (Christian); D'Acremont, E. (Elia); El-Moumni, B. (Bouchta); Ammar, A.
This study focuses on the Alboran Sea area (Westernmost Mediterranean), where a seismic analysis of the Pliocene and Quaternary stratigraphy was conducted in the Alboran Sea (Westernmost Mediterranean) using ~2000 profiles consisting of single and multi-channel seismic records. The seismic facies and architectural analysis of the deposits evidence the presence of bottom-current deposits (plastered, sheeted, elongated-separated and confined monticular drifts) and associated erosive features (terraces, scarps, moats and channels). Many of these deposits were previously considered to be open slope turbidite deposits which have now been reinterpreted as contourites.The contourite features have developed under the continuous influence of Mediterranean water masses, after the opening of the Strait of Gibraltar (roughly divided into light and dense Mediterranean waters), with plastered drifts dominating on the Spanish and Moroccan continental slopes, and sheeted drifts infilling the subbasins. ...
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