%0 Journal Article
%A Zazo Cardeña, Caridad
%A Mercier, Norbert
%A Silva Barroso, Pablo Gabriel
%A Dabrio González, Cristino José
%A Goy Goy, José Luis
%A Roquero, Elvira
%A Soler Javaloyes, Vicente
%A Borja, Francisco
%A Lario, Javier
%A Polo Camacho, Dolores
%A Luque, Luis de
%T Landscape evolution and geodynamic controls in the Gulf of Cadiz(Huelva coast, SW Spain) during the Late Quaternary
%D 2005
%@ 0169-555X
%U https://hdl.handle.net/20.500.14352/49361
%X The coastal evolution of the El Abalario area (Huelva, southern Spain) during the Late Pleistocene and Holocene isreinterpreted after a refinement of the available geochronology by means of optically stimulated luminescence (OSL) dating.New data come from the analysis of soft sediment deformation, palaeosols, geomorphological mapping, and published seismicsurveys on the onshore and offshore Gulf of Cadiz.The present structure of El Abalario dome resulted from the complex interaction of littoral-catchment processes and sealevelchanges upon an emergent coastal plain, conditioned by the upwarping of the underlying Pliocene–Pleistoceneprograding deltaic sequence. Upwarping is probably related to escape of over-pressurized fluids, accompanied by dewatering,prior to (?) and during OIS (Oxygen Isotopic Stage) 5. Continued upwarping produced the large NW–SE gravitational faultof Torre del Loro (TLF) in the southwestern flank of the dome, roughly parallel to the present coastline during OIS 5–OIS 4.The resulting escarpment favoured the accumulation of aeolian sand dunes (units U1, U2, and U3) from OIS 5 to early OIS1. Unit U1 (OIS 5) ends upwards in a supersurface with a thick weathering profile that suggests moist and temperate climaticconditions. Unit U2 accumulated mainly during OIS 4 and OIS 3 with prevailing W/E winds. The supersurface between U2 and U3 records a part of OIS 2, with relative low sea level. Sedimentation of unit U3 took place during the Last Deglaciation(radiocarbon and OSL ages) with prevailing W/SW winds, under a temperate moist climate, that became more arid towardsthe top (Holocene). A major supersurface with an iron crust-like layer (SsFe) developed during the Holocene ClimaticOptimum (OIS 1) under wetter and more temperate conditions than before, fossilizing the TLF. The supersurface is coveredby younger aeolian dunes (U4, U5, U6, and U7) transported by W–SW winds since the Late Neolithic–Chalcolithic culturalperiod (~5.0 ky cal BP)
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