“…Relative dating of seismic units is based on published and unpublished information on the Lusitanian Basin [Atrops and Marques, 1986;Wilson et al, 1989], on the northwest Iberian margin [Groupe Galice, 1979;Boillot et al, 1989;Murillas et al, 1990;C. Moita et al, Porto Basin: Seismic interpretation report, unpublished report, MILUPOBAS project, 1996; Gabinete para a Pesquisa e Exploração de Petróleo (GPEP), Petroleum potential of Portugal, unpublished report, 1986], and on the Canadian/ Irish margins [Driscoll et al, 1995;Sinclair, 1995; Williams et al, 1999;Shipboard Scientific Party, 2004]. Together with Industry well data (wells Pe-1 and Go-1), dredge data published by Mougenot et al [1979] have been used locally to date some of the strata outcropping offshore Alentejo (Figure 1b).…”