Seafloor dating

The youngest crust of the ocean floor can be found near the seafloor spreading centers, or mid-ocean ridges.

As the plates split apart, magma rises from below the Earth's surface to fill in the empty void.

Because of this correlation between age and subduction potential, very little ocean floor is older than 125 million years and almost none of it is older than 200 million years.

Therefore, seafloor dating isn't that useful for studying plate motions beyond the Cretaceous.

In essence, oceanic plates are more susceptible to subduction as they get older.He believed that the high temperature was due to the magma that leaked out from the ridge.The Continental Drift Theory of Alfred Wegener in 1912 is supported by this hypothesis on the shift position of the earth’s surface.It is the lasting remnant of an ancient ocean, the Tethys, that is shrinking as Africa and Europe collide in the Alpide orogeny.At 280 million years, it still pales in comparison to the four billion-year-old rock that can be found on the continental crust.

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