Figure 44 (b)--Geologic interpretation of north-south velocity model through the Puget Sound region, east of Seattle, using velocity cross-sections at columns 16 and 18 as a primary guide. Black dots and white dots are earthquakes. Focal mechanisms for five important earthquakes are shown (table below figure), taken from OSU catalog, Yelin and Crosson (1982), Dewberry and Crosson (1996), Langston and Blum (1977), and Baker and Langston (1987) in the order listed.