Resumen de Paleoecología de los niveles lumaquélicos con Heterostegina en el Tortoniense del sector central de la Cuenca del Guadalquivir (SO España)

Josep Tosquella Angrill, Manuel Abad de los Santos, María Luz González-Regalado Montero, Francisco Ruiz Muñoz, José Gabriel Pendón Martín

• The lumaquellic levels with Heterostegina in a detritic-bioclastic succession (Km 98 section) located in the central sector of the Guadalquivir Basin has been studied. The sedimentological and micropaleontological analysis (Iarger foraminifera, benthic and planktic microforaminifera, and ostracoda) allows deduce an outer infralittoral environment of deposition for these levels. Larger foraminifera (Heterostegina) could dominate the more oligotrophic depositional conditions during intervals of sea level rise; ostracoda and small benthic foraminifera could dominate preferably the more eutrophic ones during intervals of continental clastic input.