1. Alfred Wegener (1880-1930)

2. Mid Atlantic Ridge

3. Mid Ocean Ridge System

4. Sea Floor “Stripes” http://atlas.geo.cornell.edu/education/instructor/tectonics/polarity.html

5. Convergent Margin

6. Major Lithospheric Plates Source: NASA

7. Plate Configuration of PNW

8. Plate Margins • Divergent margins: spreading centers where new lithosphere (sea floor) is created • Convergent margins: plates are moving toward each other • Transform margins: plates move past one another without creating or destroying lithosphere

9. Mantle Convection Source: University Montpellier

10. Geothermal Gradient

11. Rate of Plate Movement

12. Plate Margins Source: USGS

13. Juan de Fuca Ridge Source: GSC

14. Plate Margins Source: USGS

15. East African Rift

16. Plate Margins Source: USGS

17. Juan de Fuca Ridge Source: GSC

18. Continental-Continental Convergence Source: USGS

19. Himalayas Source: USGS

20. Transform Margin

21. Transform Faults Left-Lateral Right-Lateral

22. Alpine Fault, New Zealand

23. Volcanism and Plate Margins Source: Smithsonian

24. Earthquakes and Plate Margins

25. Plate Tectonics Control • Igneous rock types (type and location of volcanism) • Seismic activity (type and location of earthquakes) • Location of sedimentary basins • Location of uplifts or mountain ranges • Location of ocean basins

26. Hawaii-Emperor seamount chain

27. Interval Age (my) Distance (kms) Rate (cm/yr) 1 0.8 180 22.50 2 1.3 3 1.8 4 2.6 5 3.7 6 5.1 7 10.3 8 12 9 18.9 10 20.6 11 27.2 12 42.4 Table

28. Chart