Fig. 4From: Seismic imaging of slab metamorphism and genesis of intermediate-depth intraslab earthquakesAcross-arc vertical cross-sections of intraslab seismicity and existence range of hydrous minerals in the slab. a Tohoku and b Costa Rica subduction zones. Maximum H2O contents are shown by the color scale. Dots show earthquakes. (After Hacker et al. 2003)Back to article page