1. Mountain Building
Chapter 20

2. Isostatic Rebound – crust rises as a result of __________________
This iceberg demonstrates the process of isostatic rebound.

3. Folded rock layers produced by compressional forces
Folded rock layers produced by compressional forces. This part of the folded mountain shows a __________.

4. Example of new crust being formed at Iceland.
_____ type volcano on the mid-Atlantic ridge.

5. Convergent-Boundary Mountains
The following three slides show mountain types produced when plates move __________.

6. Ocean-Ocean Convergence
Volcanic island arc
trench
Basaltic magma
Examples: Aleutian Islands, Phillipines,______

7. Ocean-Continental Convergence
volcanic mountains
trench
metamorphic rock
Andesitic magma, granitic intrusions
Examples: ________, Andes

8. Continental-Continental Convergence
folded mountains
metamorphic and sedimentary rock
faults
igneous intrusions
Examples: Himalayas,______________

9. Nonconvergent-Boundary Mountains
The next four slides show mountains formed at divergent boundaries (plates moving _____), hot spots, and areas of faulting or uplift.

10. Divergent-Boundary Mountain
pillow basalts
intrusive rock
Example:
Mid-Atlantic Ridge

11. Volcanic Hot Spot Mountain
extrusive ingneous rock
Example: ______, Galapagos

12. Uplifted Mountains Example: ____________
intrusive igneous rock, less structural deformation
Example: ____________

13. Fault-Block Mountains
mostly sedimentary rock
Example: __________, Basin and Range

14. Mountain Building Review
The Galapagos Islands formed as a result of a ___________.
The Appalachians are about _________ years old.
The Appalachians are a __________ mountain range.
The Cascades (Mt St Helens, Mt Rainier,…) are a ___________ mountain range with ___________ eruptions.