1. Ocean-Continent Collisions John Louie Geol 333 Spring 2001

2. Purpose n Provide Examples of How Mountain-Building Depends on Oceanic-Plate Features n Topographic and bathymetric images derived from Eartha Global Explorer, Copyright 1998 by DeLorme Inc., Yarmouth, Maine. www.delorme.com n New Zealand example from work by Louie, Henrys, and Bannister of UNR and the Crown Institute for Geological and Nuclear Sciences, New Zealand. www.seismo.unr.edu/ftp/pub/louie/weber/

3. Topics n Oceanic Trenches n Oceanic Plateaus n Next Topics: u Continental Collision u New Zealand and the Hikurangi Trough

4. Oceanic Trenches n Andes

5. Oceanic Trenches n Chile

6. Oceanic Trenches n Chile

7. Oceanic Trenches n Chile

8. Oceanic Trenches n Chile

9. Oceanic Trenches n Cascadia

10. Oceanic Trenches n Cascadia

11. Oceanic Trenches n Cascadia

12. Oceanic Trenches n Cascadia

13. Oceanic Trenches n Cascadia

14. Oceanic Trenches n Cascadia

15. Oceanic Trenches n Cocos Plate

16. Oceanic Trenches n Central American close-up

17. Oceanic Trenches n Costa Rica

18. Oceanic Trenches n Costa Rica

19. Oceanic Trenches n Nicaragua Subduction Wedge

20. Oceanic Trenches n Costa Rica Subduction Wedge

21. Oceanic Trenches n Japan - Philippine Sea

22. Oceanic Trenches n Japan - Philippine Sea

23. Oceanic Trenches n Japan - Philippine Sea

24. Oceanic Trenches n Underplating

25. Oceanic Trenches n Japan - Philippine Sea

26. Oceanic Trenches n Japan - Philippine Sea

27. New Zealand and the Hikurangi Trough n Australia–Pacific Plate Boundary

28. Oceanic Plateaus n Ontong-Java

29. Oceanic Plateaus n Ninety-East Ridge

30. Oceanic Plateaus n Kerguellen