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...ey are defined) and many minor plates. The lithospheric plates ride on the asthenosphere. These plates move in [[relation]] to one another at one of three types of ...'s lithosphere has a higher strength and lower density than the underlying asthenosphere. Their movement is driven by heat dissipation from the [https://en.wikipedi

...lies the [[asthenosphere]], which forms the inner part of the mantle. The asthenosphere behaves like a superheated and extremely [[viscous]] liquid.[https://www.ge The lithosphere essentially ''floats'' on the [[asthenosphere]] and is broken up into what are called [[tectonic plate]]s. These plates a