Morphosedimentary characterlzation ofthe Coastal fíats between the Paraná Guazú River and the localitíes of Gualeguay and Ibicuy. Entre Ríos province, Argentina

The Paraná River in terms of length and water discharge is the second after the Amazon in South America, and it generates a large delta when it reaches the Rio de La Plata estuary. It is possible to differentiate a number of sedimentary environments in this delta: permanent lagoons, the Ibicuy Unit, the coastal lagoon, deltas and smaller estuaries, parallel beaches, tidal flats, a bay, levees and meander belts, and the lower delta plain. The Ibicuy Unit is a wave-dominated delta, which was strongly affected by wavy action during an exceptional episode of the Paraná River in a high sea-level state. The parallel beach distribution together with the development of the beach ridge reflects the different sea level falling episodes until its current positio