RT Journal Article T1 Estudio preliminar de la organización secuencial del Complejo Basal Transgresivo en el Sector Central de la Cuenca del Guadalquivir (Tortoniense, SO España) T1 Preliminary study of sequential arrangement of the Transgressive Basal Complex in the central sector ofGuadalquivir foreland Basin (Tortonian, SW Spain) A1 Abad de los Santos, Manuel A1 Ruiz Muñoz, Francisco A1 Pendón Martín, José Gabriel A1 Tosquella Angrill, Josep A1 González-Regalado Montero, María Luz A1 López González, Nieves AB The sedimentary filling of the Guadalquivir Basin along its central sector during Tortonian consists of fluvial/deltaic fades, which are recurrently cut by several transgressive pulses. The study of the sequential arragement of these deposits, also called Transgressive Basal Complex, lead us to differentiate three relative orders of transgressive-regressive cyclicity: minor, intermediate and mayor order cycles. The basic building blocks are the "fundamental sequences" which are associated to intermediate order cycles. Controlling factors of this sequences can be found among eustatic raises, tectonic activity, climatic changes and relative accumulation rates of sedimentary supply PB Sociedad Geológica de España YR 2003 FD 2003 LK http://hdl.handle.net/10272/8987 UL http://hdl.handle.net/10272/8987 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 14 jul 2026