Seafloor spreading

From Wikinfo

Seafloor spreading is a part of the theory of plate tectonics.

At the Mid-Atlantic Ridge (and other places), material from the mantle is pushed upward and forces the crust apart, this results in continental drift.

References

• Adapted from the Wikipedia article, "Seafloor spreading" http://en.wikipedia.org/wiki/Seafloor_spreading November 22, 2003