LATE PLEISTOCENE-HOLOCENE SEDIMENTARY EVOLUTION OF THE NORTHERN CATALONIA CONTINENTAL-SHELF (NORTHWESTERN MEDITERRANEAN-SEA)

The late Pleistocene-Holocene sedimentary evolution of the northern Ca talonia continental shelf is interpreted as transgressive and highstan d systems tracts, separated by an unconformity that seismically repres ents the coincidence between the ravinement surface and maximum floodi ng surface. During the transgressive stage, the shoreface erosion prev ailed over sedimentation, leading to the development of palimpsest and relict facies. During the highstand stage, accumulation occurred only in areas with a steady supply of sediment, favouring the development of a depositional mound and the Fluvia-Muga and Ter prodeltas. Their d istribution resulted from southward geostrophic current flow and the p hysiographic configuration of the area.