RT Journal Article T1 Los foraminíferos bentónicos del horizonte glauconítico inferior de la Formación «Arcillas de Gibraleón» (Depresión del Guadalquivir, SO España) T1 Foraminifers of the lower glauconitic level of the Arcillas de Gibraleón Formation (Guadalquivir Basin, SW Spain) A1 González-Regalado Montero, María Luz A1 Ruiz Muñoz, Francisco A1 Abad de los Santos, Manuel A1 Pendón Martín, José Gabriel A1 Tosquella Angrill, Josep AB This paper analyzes the benthic foraminiferal assemblages present in two Upper Tortonian sections belongingto 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 inostracods that may characterize the transition toward deeper conditions. In the upper samples, deepneriticand epibathyal species are dominant, indicating a moderate-deep environment (150-300 m) inwhich was deposited most of the glauconitic horizon PB Sociedad Geológica de España YR 2005 FD 2005 LK http://hdl.handle.net/10272/8738 UL http://hdl.handle.net/10272/8738 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026