Faults are cracks in the Earth's crust caused by stress and movements within the crust. Faults can range in size from millimeters to thousands of kilometers long and cause earthquakes or creeping movements. Different types of faults include normal faults, reverse faults, and strike-slip faults, each producing distinct landscapes and forming either the hanging wall above the fault plane or foot wall below. The San Andreas fault is an example of a major strike-slip fault in California.

1. Earth Has Its Faults Miguel Hidalgo School Mrs. Lee

2. A Fault A crack between two blocks of rock.

3. The Movements Earthquakes Creeps When the movements happen quickly When the movements happen slowly

4. How Long Can A Fault Be? A few millimeters Thousands of kilometers

5. What Forms The Fault? Stress within the earth’s crust

6. Hanging Wall v.s. Foot Wall Hanging Wall Foot Wall Above the fault Below the fault

7. Which one is the hanging wall? Did you notice that the hanging wall is always in the direction of the dip of the fault plane ?

8. The Fault Plane The fault plane is the area where the movement occurs.

9. Different Types Of Faults Faults Normal Faults Reverse Fault Strike-Slip Fault

10. Fault Scarp

11. San Andreas Fault (A Strike-Slip Fault)

12. Blind Thrust Fault

13. Breathtaking Landscapes Normal Faults Reverse Faults Strike-Slip Faults