Figure 55---Finite-element grid used for 'plates' program to model stress, strain, and velocity parameters. Dip of faults are coded as in the legend below the grid. Faults modeled are OLMT (Olympic Mt. thrust), DMF-DAR (Devils Mt.-Darrington fault zone), WIF (Whidbey Island fault), SFZ (Seattle fault zone), OWL (Olympic-Wallowa lineament), WRZ (western Rainier zone), SHZ (St. Helens zone), GRZ (Goat Rocks zone from Stanley et al., 1996), PHFZ (Portland Hills fault zone).