1. Deforming the Earth’s Crust: Faulting
Pg. 117

2. What is a FAULT? When rock layers BREAK when stress is applied
One block of rock slides relative to another

3. the foot wall? What is the hanging wall,
Narrow base block of angled crust
What is the hanging wall,
see page 114
Broad base block of angled crust
the foot wall?

4. What is a normal fault?
When the hanging wall moves down relative to the footwall
Occurs when tectonic forces cause tension that pull the blocks of rock apart

5. A normal fault

6. What is a REVERSE FAULT?
When the Hanging wall moves up relative to the footwall
Occurs when tectonic forces push the blocks of rock together (Compression)

7. A reverse fault

8. What are STRIKE-SLIP FAULTS?
Form when opposing forces cause rock to break and move horizontally
Example: California’s San Andreas fault

9. A strike slip fault
Geologic Activity,

10. Mountain Building
Occurs because of tectonic plate movement

11. What are folded mountains?
Rock layers that are squeezed together
Form at convergent
plate boundaries
Make the highest mountains in the world

12. Folded mountain
Layers that are squeezed together

13. What are some examples of folded mountains?
Appalachian mountains
The Alps
Himalayan Mountains

14. What are fault block mountains?
Tension causes large blocks of rock to drop down
Example: Teton Mountains, Wyoming

15. Fault block mountains
Grand Tetons Wyoming

16. Volcanic Mountains

17. What is uplift and subsidence?
Subsidence—the sinking of a region of the Earth’s crust
Uplift—the rising of a region of the Earth’s crust

18. What is Tectonic Letdown?
Sinking of a region of Earth due to tension
Rift zone – a set of deep cracks that form between two plates that are pulling apart

19. Formation of a Rift Valley Sequence showing how movements deep under the Earth's Crust help to create a Rift Valley