A comprehensive site on plate tectonics and the Earth. Read how the oceanic and continental crusts, as well as the heat and the pressure within the Earth affect plate tectonics.

A suite of lessons focusing on finding the fossil evidence for lithospheric plate tectonics. Inquiry-based exploration of plate tectonics evidence includes fossil distribution, earthquakes, and volcanoes.

[Free Registration/Login may be required to access all resource tools.] Describes features of the seafloor and how they are mapped by echo sounding. It touches upon the continental margin as well.

College-level research information describes how the movement of Earth's interior causes seismic wave activity.