Abstract
The Algarve coast, Southern Portugal, cuts in the West old slates, and in the South a younger sedimentary cover. The influence of structure in it is mostly indirect : it consists principally of a partial exhumation of a karst which had been fossilised during the Pliocene. Relative oscillations of sea-level during the Upper Quaternary are testified by remnants of benches and old beaches lying slightly above present-time sea-level, as well as by eolianites dipping below zero O.D. Present-time evolution consists mostly of a rapid retreat of cliffs cutting into Pliocene soft sandstones and sands, and a correlative extension of deposition in spits in the eastern section, as a result of a West and East coastal current.
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