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The Piedras Estuary is one of the most significative estuarine systems on the mesotidal Huelva Coast, in the Northwestern portion of the Cadix Gulf. The river mouth is presently an estuarine lagoon partially closed by a large spit constructed from an old barrier island system. This estuary is in an advanced state of infilling and its tidal prism has decreased during the Holocene causing instability...
The Guadiana River estuary and delta is one of the most important mesotidal fluvio-marine systems of the southwestern Iberian Peninsula. The river mouth was formed as a narrow channel excavated by fluvial incision during the Pleistocene lowstand and then flooded 6500 yr ago, during the Flandrian transgression (Holocene). The estuary is in an advanced state of sediment infilling in its proximal part,...
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