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The Geological Society: Plate Tectonics: Mechanical Properties: 'Lithosphere' and 'Asthenosphere'
This resource describes how the mechanical properties of the lithosphere and asthenosphere change as the temperature and pressure increase. This can cause rocks to flow and become plastic-like.
CK-12 Foundation
Ck 12: Earth Science: Lithosphere and Asthenosphere
[Free Registration/Login may be required to access all resource tools.] The lithosphere is made of the brittle crust and uppermost mantle and lies on the plastic asthenosphere. Read about the properties of the lithosphere and asthenosphere.