You've just seen simulations of geologic structures formed by different stresses under different conditions. Now, you'll examine structures to infer the conditions and the type of stress that was applied. Keep in mind that structures in the real world are more complex than the models you just saw. Structures may show evidence of more than one type of deformation.

  !   Click each image to see a larger version. Examine the photograph and try to identify the geologic structure. To see an outline of the structure, move your cursor over the image.

Note: All the structures shown here show some brittle deformation—that which broke the rock in order to expose the structure. Focus on the highlighted structures in each photograph for your answers.

3. Identify the type of structure, type of deformation, and stress direction for each image.