Lithosphere: Learn about the lithosphere

Learn about the lithosphere , the outermost hard layer of the Earth, composed of the crust and the uppermost mantle. Explore its types, layers, components, properties and its relationship with other spheres of life. Learn what lithosphere is, how it is composed of crust and upper mantle, and what are the two types of lithosphere : oceanic and continental. Find out how lithosphere interacts with atmosphere, hydrosphere, and biosphere through pedosphere. Lithosphere, rigid, rocky outer layer of Earth , consisting of the crust and the solid outermost layer of the upper mantle. It extends to a depth of about 60 miles (100 km). The lithosphere is broken up into about a dozen separate, rigid blocks, or plates.