
handle: 10045/43227 , 10272/10677
La sección de El Barcelón, localizada en el sector interno del Arco de Águilas (Cordillera Bética oriental), registra la reinundación pliocena. Consta de una unidad basal de conglomerados, A, y una unidad B de margas limosas y areniscas glauconíticas. Los rasgos icnológicos esculpidos sobre los bloques de la unidad A, atribuibles a la icnofacies de Entobia, sugieren una transgresión rápida. En la unidad B se han reconocido tres asociaciones de foraminíferos bentónicos: una asociación I propia de ambientes epibatiales, seguida de la II, propia de medios circalitorales, y finalmente, una asociación III, infralitoral. En general, las asociaciones apuntan a condiciones eutróficas, con estrés ambiental, y a episodios de corrientes energéticas en el fondo.
The Barcelón section, located at the inner sector of the Águilas Arc (Eastern Betic Cordillera), records the Pliocene reflooding. This section comprises a basal unit A, made up of conglomerates, overlain by unit B, consisting of silty marls and glauconitic sandstones. Ichnological traits sculptured over blocks of unit A are attributable to the Entobia ichnofacies, and suggest a rapid transgression. In unit B three benthic foraminiferal assemblages are recognized: an assemblage I, related to epibathyal settings, followed by a circalittoral one, II, and finally, an infralittoral assemblage, III. Overall features point to eutrophic conditions, environmental stress at the bottom, and events of high energy bottom-currents.
Benthic foraminifera, Estratigrafía, Plioceno Inferior, Análisis paleoambiental, Early Pliocene, Paleoenvironmental analysis, Foraminíferos bentónicos, Águilas Arc, Ichnofacies, Icnofacies, Arco de Águilas
Benthic foraminifera, Estratigrafía, Plioceno Inferior, Análisis paleoambiental, Early Pliocene, Paleoenvironmental analysis, Foraminíferos bentónicos, Águilas Arc, Ichnofacies, Icnofacies, Arco de Águilas
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