Los foraminíferos bentónicos del horizonte glauconítico inferrrior de la Formación "Arcillas de Gibraleón"(depresión del Guadalquivir, SO España)
- González-Regalado Montero, María Luz
- Abad de los Santos, Manuel
- Pendón Martín, José Gabriel
- Tosquella Angrill, Josep
- Ruiz Muñoz, Francisco
ISSN: 0213-683X
Year of publication: 2005
Issue: 38
Pages: 127-130
Type: Article
More publications in: Geogaceta
Abstract
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.