Resumen de La secuencia aluvial del bajo Guadalquivir (sw España) durante el Pleistoceno Superior-Holoceno
Francisco Borja Barrera, C. Borja, Fernando Díaz del Olmo, José Manuel Recio Espejo, J.A. Caro, J.A. Valiente, P. Fraile
Pleistocene to Holocene evolution of the lower Guadalquivir floodplain (SW Spain) is analyzed from a geoarchaeological approach. We especially study sedimentological data from the valley of the ancient Tagarete River, a small left tributary of the Guadalquivir which is now nolonger there. Our study suggests a transition from the Pleistocene to the Holocene with a triple sedimentary system. The sequence begins with a thick detritic series of upper Pleistocene alluvial gravels, including well-rounded stone tools of the Middle Paleolithic (1). The transit of this alluvial system to the Holocene facies occurs through a strong stratigraphic unconformity that gives way, first, to an organic sediment formation environment (lagoon) correlative with the end of the sea level rise in the mid-Holocene (2), and, subsequently (late Holocene), to a predominance of flooding deposits and emerging facies at the top of the sequenc
