1. Chapter 17 Plate Tectonics Part 2

2. Plate Interactions  We have two different types of crust  Oceanic  Continental  We have three different types of boundaries.  Convergent – plates coming together  Divergent – plates moving apart  Transform – plates slide past each other

3. Plate boundaries

4. Convergent boundaries

5.  Oceanic - Oceanic  Pacific plate colliding with the North American plate  Aleutian Islands are forming

6. Aleutian Islands

9. Convergent boundaries  Continental – Continental  Indian plate colliding with the Eurasian plate  Himalayas are forming

10. Himalayas

11. Himalayas

12. Himalayas

13. Convergent boundaries  Oceanic – Continental  Nazca plate colliding with South American plate  The Andes mountains are forming

14. Andes Mountains

18. Divergent boundaries  Oceanic – Oceanic  North American plate and the African plate  Mid-Atlantic ridge

19. Mid Atlantic Ridge

20. Mid Atlantic Ridge @ Iceland

21. Divergent boundaries  Continental – Continental  African plate splitting apart near Uganda  East-African rift

22. East African Rift

23. Continental Rift Zone

24. Lake Tanganyika 2 nd deepest lake in the World (4800 ft)

25. Lake Tanganyika

26. Victoria Falls

28. Great Rift Valley

30. Transform boundaries  Pacific plate and the North American plate  San Andreas fault  California

31. San Andreas Fault

32. High altitude view

33. Causes of Plate Motion  Convective currents cause plate movement.

34. Causes of Plate Motion  Ridge push and slab pull also contribute to plate motion.