foot wall. 3. Based on the direction of movement, label each of the diograms abo

Question

foot wall. 3. Based on the direction of movement, label each of the diograms above as "thrust/reverse "normal fault." 5. What type of fault is drawn? 4. What type of fault is drawn? normal or thrust/reverse normal or thrust/reverse 7. What type of stress is shown? 6. What type of stress is shown? compression or tension compression or tension 8. For each fault diagram above, draw one horizontal arrow in each circle or showing the stress direction. Lecture Tutorials for Introductory Geoscience o W H. Freeman and Company 105

Explanation / Answer

4) Reverse/thrust : form when the hanging wall moves up. The forces creating reverse faults are compressional, pushing the sides together. They are common at convergent boundaries.

5) normal fault:Normal faults form when the hanging wall drops down in relation to the footwall. Extensional forces, those that pull the plates apart, and gravity are the forces that create normal faults. They are most common at divergent boundaries.

6)compression stress: reverse faults produce compression stress.

7)tension stress :normal fault produced by tension stress.

8)    compression stress

   tension stress

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