Morfologia e cobertura detrítica da plataforma litoral na área de Albergaria-a-Velha (distrito de Aveiro)

Abstract

The littoral platform of "Albergaria-a-Velha" near Aveiro region has particular morphological features. The flatness of its surface contrasts with the steep slops of its Eastern border. This slopes have strong relation with the tectonic settings of this area, were it is possible to follow their expression over the landscape, not only the Porto-Tomar Fault, but also other secondary faults. Toward East of the eastern border of the platform of "Albergaria-a-Velha", the relief has deep tectonic valleys, separating its different sectors. The age of sedimentary cover of the platform is interpreted as Pliocene to Lower Quaternary and is intersected by the actual hydrographical net, which left several terrace deposits. The tilt shown by some of this surfaces and related deposits, the steepness of some scarps and the hydrographical features leads to the conclusion that the principal tectonic elements of this area have recent movements.