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  Figure 1.15b: Contour map of the normal stress, sxx, acting parallel to a fault modeled as surface of displacement discontinuity with uniform left-lateral slip (Crouch and Starfield, 1983). Note the pattern of tensile stress (positive, warm colors) in the first and third quadrants, and compressive stress (negative, cool colors) in the second and fourth quadrants. Also note that the stress magnitudes increase toward the model fault tips.  
         
 
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