Los foraminíferos bentónicos del horizonte glauconítico inferrrior de la Formación "Arcillas de Gibraleón": (depresión del Guadalquivir, SO España)

• Autores: María Luz González-Regalado Montero, Manuel Abad de los Santos, José Gabriel Pendón Martín, Josep Tosquella Angrill, Francisco Ruiz Muñoz
• Localización: Geogaceta, ISSN 0213-683X, Nº. 38, 2005, págs. 127-130
• Idioma: español
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• Resumen

  • This paper analyzes the benthic foraminiferal assemblages present in two Upper Tortonian sections belonging to the «Arcillas de Gibraleón» Formation (Guadalquivir Basin) containing a characteristic glauconitic level. The basal samples of this horizon show both shallow-water and epibathyal taxa, a mixture also found in ostracods that may characterize the transition toward deeper conditions. In the upper samples, deep-neritic and epibathyal species are dominant, indicating a moderate-deep environment (150-300 m) in which was deposited most of the glauconitic horizon.