Comparison between earthquake slip vector direction and relative motion at block boundaries from our best model. Green lines at focal mechanism solutions are the earthquake slip vector projection on the surface, while blue lines depict the relative direction between pair of blocks. Histograms quantify the difference between earthquake slip vector direction and the relative direction from model D for (a) the subduction zone (NAZCA/NAW and NAZCA/PFW) and (b) Crustal faults. See Table 1 for the full block names.