The lithosphere mantle is the portion of the Earth’s mantle that lies beneath the lithosphere’s crust and is part of the rigid outer shell of the Earth. It plays a key role in plate tectonics, as the lithospheric plates are composed of both crust and lithospheric mantle. Understanding its composition and behavior is essential for studying mantle dynamics and plate movements.
Reference: Anderson, D. L. (2007). “New Theory of the Earth.” Cambridge University Press.