142 W. H. HOBBS REPEATING PATTERNS IN STRUCTURE OF LAND 



removing from sight significant structure lines in the relief. Where both 

 fold and fracture structures are well developed in the same district, the 



", '^^'"7'f<ol„i^„ 



Figure 19. — Fracture Relief Patterns locally obscured ty Dominance of Fold Structures 



The largest Island in the group betrays in its curving lines the influence of folds, 

 while the smaller land masses to the southeast are cut into compartments on fracture 

 lines. (From the Vaxholm sheet of the ofiiclal topographic map of Sweden.) 



one structure or the other may locally dominate the relief forms, as is 

 brought out by figure 19. 



In districts of only moderately accented relief, folds without pitching 

 axes will be represented by straight and parallel elements in the relief. 



