Lithosphere
From Wikinfo
The Lithosphere (from the Greek for "rock") consists of the Earth's crust and the uppermost layer of the mantle. It extends below the surface about 60km. This is the region of plate tectonics.
See also: Asthenosphere
Refer to Earth for detailed information on the interior of the planet.
References
- Adapted from the Wikipedia article, "Lithosphere" http://en.wikipedia.org/wiki/Lithosphere, used under the GNU Free Documentation License

