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1. Faults

2. Tectonic Plates Large pieces of rocks that makes up the Earth’s crust Earth divided into several tectonic plates

3. Asthenosphere Upper part of the mantle Partly molten Allows the movement of overriding plates at relatively slow rates. The layers of the Earth

4. Faults Fracture after an earthquake Fracture along which block of rocks have moved Found at the boundaries of tectonic plates

5. Parts of a Fault Fault line - the trace of the fault Dip - angle that the fault cuts through the soil layers Parts of a Fault

6. Parts of a Fault Hanging wall blocks - portion above the fault Footwall blocks - the surface below the fault Parts of a Fault

7. Dip-slip faults - refers to faults where movement of blocks is parallel to the dip of the fault surface Dip-slip faults Different types of Faults

8. Normal Fault - formed by tensional stresses that pull rocks apart hanging wall moves down relative to the footwall associated with divergent plate boundaries Normal faults Different types of Faults

9. Horsts and Grabens - alternating uplifted and down-dropped blocks. Horst - uplifted or raised areas Grabens - down-dropped or lowered areas Horsts and Grabens Different types of Faults

10. Reverse Fault - formed by compressional forces that push the plates towards each other. Hanging wall moves upward relative to the footwall Reverse Fault Different types of Faults

11. Thrust Fault - a type of reverse fault whose dip is less than 45 degrees Thrust Fault Different types of Faults

12. Strike-slip Fault - result of sideways movement of blocks of rocks. Blocks move laterally. Strike-slip Fault Different types of Faults

13. Oblique Fault - has both the dip-slip and strike-slip component formed by shear stress, and tensional or compressional stress Oblique Fault Different types of Faults

14. Types of Faults observed on a large scale Strike-slip fault in San Andreas Fault Normal fault on the coast of Somerset, England Reverse fault in the Grands Causses in Bédarieux, France

15. Faults are breaks in rocks where slippage has occurred. 1 Faults is composed of a fault line, dip, and blocks. 2 Faults can be classified as dip-slip fault, strike-slip fault, and oblique fault. 3

16. Identify the specific type of fault in each illustration.

17. How does a strike-slip fault form?