| Create a poster that illustrates sea-floor spreading in the Atlantic ocean basin. |
| They are places where the plates are moving apart and molten rock is welling up from below the surface to fill the gap a phenomenon known as sea-floor spreading. |
| After much thought, he proposed in 1960 that the movement of the continents was a result of sea-floor spreading. |
| The main figure demonstrates how sea-floor anomalies, also known as magnetic stripes, develop during sea-floor spreading. |
| Surface structures and crustal-scale geophysical studies have suggested the WFB is analogous to a sea-floor spreading centre. |
| Note the Moho near 1000 km in each frame, which was thinned by extension prior to the onset of sea-floor spreading. |
