The geosphere is considered to comprise the entire earth solid atmosphere. The earth is also into two parts the interior and the exterior core, the mantle and the crust.
The lithosphere is the solid, outer part of the Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth's structure. It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below.
