El registro holoceno del estuario del Guadalquivir en el área de Sevilla: aproximación geoarqueológica

We study the sedimentary internal area filling of Guadalquivir estuary, near Seville. The sediment samples come from two cores drilled in San Fernando Street, located to the south of the historical town. They are separated about 200 m and they have deepened something more than 18 m, reaching the geologic formation of Margas Azules (late Miocene). Methodologically, we used sedimentology, palynology (twenty-two samples distributed between 2 m and 12.35 m of depth) and radiocarbon data (six samples spread between 4 m and 12 m of depth), as well as the analysis of the archaeological record. All it allows to establish a palaeogeographic sequence characterised by three great phases: marine transgression episode (Lower-middle Holocene vertical aggradation); alluvial episode with final progressive human influence (Middle-recent Holocene lateral progradation); and urban occupation episode with cyclic alluvial influence (Recent Holocene).