2. The hypsigraphic curve

3. The submersible Alvin

4. Echo sounding Seismic Profiling

5. As they cool down through the Curie point,

6. The Formation of Magnetic Stripes

7. The Ocean Floor Sinks as it gets older

8. The rift valley of a spreading center has a horst and graen structure

9. Structure of the sea floor

10. Transform faults offsett segments of the mid-oceanic ridge Abyssal Hills

11. Pelagic sediment becomes thicker with increasing distance from the mid-oceanic ridge

12. Evolution of a rift ocean

13. A passive Continental margin

14. An active Continental Margin

15. Formation of an Island Arc

16. An Andesitic Volcano on an Island Arc

17. Volcanic island vs. Guyot

18. Formation of an Atoll

19. Spreading Rates vs Ridge Volume