
handle: 10508/6459 , 10508/8440
This paper presents a new view of recent sedimentation in the Alboran Sea, based on the analysis of the largest database of available seismic profiles in that sea. The results reveal that contourites represent the main morphosedimentary features that characterize the margins and basins. Several types of contourite features have been characterized, both depositional (plastered, sheeted, elongated-separated, confined, and channel-related) and erosive (moats, terraces and furrows). These elements are interrupted by the construction of turbidite fans, mainly in the Spanish margin, and by sedimentary instabilities that locally affect to the open slope, Alboran Ridge and morphological highs. This new morphosedimentary view of the Alboran Sea reveals for the first time the important role of along slope processes (transport, sedimentation and erosion) associated with Mediterranean water masses. En este trabajo se presenta una nueva visión de la sedimentación reciente en el Mar de Alborán, en base al análisis de la mayor base de datos con perfiles sísmicos disponibles en dicho mar. Los resultados obtenidos revelan que las contornitas representan el principal elemento morfosedimentario que caracteriza a los márgenes y las cuencas. Se han caracterizado varios tipos de elementos contorníticos deposicionales (crestas adosadas, laminares, elongadas-separadas, confinadas y de canal) y erosivos (fosas, terrazas y surcos). Estos elementos están interrumpidos por la construcción de abanicos turbidíticos, principalmente en el margen español, y por inestabilidades sedimentarias que afectan localmente al talud abierto, a la Dorsal de Alborán y a los altos morfológicos. Esta nueva visión morfosedimentaria del Mar de Alborán pone de manifiesto por primera vez el importante papel de los procesos sedimentarios longitudinales al margen (transporte, sedimentación y erosión) relacionados con las masas de agua mediterránea. 0
contourites, Mediterranean water masses, geomorphology, turbiditic fans, Alboran Sea
contourites, Mediterranean water masses, geomorphology, turbiditic fans, Alboran Sea
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