RT Journal Article T1 Evolución paleoambiental del tránsito Eoceno-Oligoceno en el Atlántico sur (Sondeo 1263) basada en foraminíferos bentónicos T1 Paleoenvironmental evolution of the Eocene-Oligocene transition in the South Atlantic (Site 1263) based onbenthic foraminifera A1 Fenero, Raquel A1 Thomas, Ellen A1 Alegret, Laia A1 Molina, Eustoquio AB Quantitative análisis of benthic foraminiferal assemblages at South Atlantic Site 1263 providedinformation about paleobathymetry and changes in benthic foraminiferal faunas across the Eocene-Oligoceneboundary. Benthic foraminifera indicate an upper abyssal depth (~ 2000 m). Changes in relative abundancesof Epistominella exigua, Epistominella vitrea, Globocassidulina subglobosa and Nuttallides umbonifera,probably indicate variability in seasonality of export productivity, bottom current intensity and carbonatecorrosivity. The transition into glaciation event Oi-1 is characterized by highly seasonal productivity, Oi-1itself by less variability, probably at fairly active bottom currents PB Universidad de Huelva YR 2010 FD 2010 LK http://hdl.handle.net/10272/7471 UL http://hdl.handle.net/10272/7471 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 14 jul 2026