%0 Journal Article
%A Mediavilla López, Rosa María
%A Antón López, Loreto
%A Dabrio González, Cristino José
%A Perucha, M.A.
%A Santisteban Navarro, Juan Ignacio
%A Mediato Arribas, José F.
%A Barnolas Cortina, A.
%A Llave, E.
%T Distribución y características de los depósitos fluviales pleistocenos del subsuelo de la Bahía de Cádiz
%D 2004
%@ 1576-5172
%U https://hdl.handle.net/20.500.14352/49356
%X Middle to Upper Pleistocene fluvial sediments of the Cádiz Bay occur fifling partly two disconnectedsub-basins excavated into shallow marine deposits of Pliocene to Lower Pleistocene age,and are buried under fluvial and estuarine Hofocene deposits. Subsurface, drill cores, and surfaceinformatio indicate that the area of the Bay was occupied by a more or less continuous basinduring the Late Pliocene-Lower Pleistocene, but the pattern changed during Middle to Late Pleistoceneas revealed by facies analysis and palaeogeographical reconstruction of the fluvial environments.Fluvial deposits are laterally discontinuous, with variable rhickness and elongatedtroughs occupied by the coarsest sediments available. Our paleogeographical reconstruction forthis periad shows a landscape with two subaerial sub-basins that acted as Fluvial valleys during glacially-forced lowstands, with two main Fluvial systems flowing constrained by topographical highs.This configurarion records the coincidence of very low sea level (regressive conditions) during glacialperiods and active neotectonics. The valleys were flooded during the postglacial Holocenetransgression and sea level surpassed the elevations separating the former valleys leading to theapparently simple configuration of the bay.
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