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Contourite sedimentation in the Alboran Sea: Plio-Quaternary evolution

Authors: Juan, Carmen; Ercilla, Gemma; Estrada, Ferran; Casas, David; Alonso, Belén; García, Marga; Farran, Marcel-lí; +7 Authors

Contourite sedimentation in the Alboran Sea: Plio-Quaternary evolution

Abstract

[ES] Desde el inicio de la investigación científica en el Mar de Alborán en los años 80 se han presentado varios trabajos de estratigrafía Plio-Cuaternaria. Recientemente hemos revisado todos los datos disponibles con el propósito de mejorar el nivel de detalle de la estratigrafía previa, añadiendo nuevos límites cronoestratigráficos (Lower Pliocene Revolution –LPR-, Base Quaternary Discontinuity –BQD- y Middle Pleistocene Revolution –MPR-) con significados paleoclimático y paleoceanográfico. Su inclusión nos ha permitido rastrear los efectos de las masas de agua mediterráneas sobre la sedimentación desde la apertura del Estrecho de Gibraltar. Los nuevos resultados indican que el registro sedimentario Plio-Cuaternario está principalmente caracterizado por contornitas, que comprenden tanto rasgos deposicionales como erosivos, que contribuyen a la construcción de los márgenes y relleno de las cuencas. Esto ha permitido establecer un nuevo modelo de evolución sedimentaria durante el Plio-Cuaternario con dominancia de los procesos longitudinales para el Mar de Alborán.

[EN] Several attempts for establishing a good Plio-Quaternary stratigraphy were proposed and disputed since the beginning of the studies in the Alboran Sea during the 80’s. Now, we have reviewed all the available data with the purpose of improving the detail of the previous stratigraphy by adding new chronostratigraphic boundaries (Lower Pliocene Revolution –LPR-, Base Quaternary Discontinuity –BQD- and Middle Pleistocene Revolution –MPR-) with paleoclimatic and paleoceanographic significances. Their addition have allowed tracking the effects of the Mediterranean water masses on the sedimentation since the opening the Strait of Gibraltar. The new results indicate that the Pliocene and Quaternary sedimentary record is mainly characterized by contourites, comprising both depositional and erosive features, that contribute to the outbuilding of the margins and infilling of the basins. Thus, a new Plio-Quaternary sedimentary evolution model with dominance of the alongslope processes has been established for the Alboran Sea.

This work has been developed thanks to the CONTOURIBER (REF. CTM2005-08071-C03-02/MAR) and MONTERA (REF. CTM-14157-C02-02/MAR) projects, and Action Marges Program.

Carmen Juan ...et al. -- 4 páginas, 2 figuras, 1 tabla. -- VIII Congreso Geológico de España, Oviedo.

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Spain
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Keywords

Contourites, Paleoceanography, Stratigraphy, Paleoceanografía, Plio-Quaternary, Estratigrafía, Plio-Cuaternario, Contornitas, Mar de Alborán, Alboran Sea

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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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