- Dictionary
- Word comparison: lithosphere vs. asthenosphere
lithosphere vs. asthenosphere
noun
Geology.
the solid portion of the earth (atmosphere,hydrosphere ).
the crust and upper mantle of the earth.
noun
Geology.
the region below the lithosphere, variously estimated as being from fifty to several hundred miles (eighty-five to several hundred kilometers) thick, in which the rock is less rigid than that above and below but rigid enough to transmit transverse seismic waves.