The interpretation of seismic refraction/wide-angle reflection data from the 1995 Crustal Investigations off- and on-shore Nazca/Central Andes (CINCA95) project has resulted in the derivation of nine E-W two-dimensional (2-D) velocity cross sections for the region between the Peru-Chile trench and the coast between 19.5S and 25S, with three of the cross sections extending a farther 100-200 km inland.