2. Review of plate boundaries:

3. Everything in one easy picture:

4. 1)DIVERGING PLATE BOUNDARY MID OCEANIC RIDGES RIFT VALLEYS VOLCANOES EARTHQUAKES Ex: mid Atlantic Ridge and African rift valley SEE PAGE 92

6. Iceland:

7. 2) CONVERGING PLATE BOUNDARY DEEP OCEANIC TRENCHES SUBDUCTION ZONES EXTREME CONTINENTAL MOUNTAIN BUILDING Ex: Marianas Trench, Peru-Chile Trench, Himilayan mountains See page 103-104

8. Oceanic VS. Continental: Peru-Chile Trench: deep water and Andes Mountains

9. Andes Mountains:

10. Oceanic VS. Oceanic: Marianas Trench in Pacific: very deep water

11. Japan Trench fissure at 6200 m.

12. Continental VS. Continental: Himilayas: extreme mountains

13. Mt. Everest:

14. Everest in better perspective:

15. 3) TRANSFORM BOUNDARIES LONG FAULT LINES EXTREME EARTHQUAKES Ex: San Andreas Fault See pg. 97

16. San Andreas:

17. 4) SPECIAL “HOTSPOTS” Caused by hotspots in the aesthenosphere, volcanoes can appear even in the middle of a plate. As the plate moves slowly, one hotspot can create a chain of volcanoes. Best example is the Hawaiian island arc.

18. Hawaiian Island Arc:

19. Mauna Loa Volcano

20. Mauna Loa lava flow

21. WORLD TECTONIC PLATES

22. WORLD TECTONIC ACTIVITY Marianas/Japan Trench Japan Hawaii Pacific N.W., Cascade Volcanoes San Andreas Fault Peru-Chile Trench Mid Atlantic Ridge, Iceland African Rift Valley Himilayan Mountains