Earth Composition Layers. Mantle (in geology) the thick layer of the earth beneath its outer crust. Starting at the center, earth is composed of four distinct layers.
The earth's layers are made up of an inner core, an outer core, the lower mantle, the upper mantle, and the outer solid crust.
Crust, mantle, core, lithosphere, asthenosphere, mesosphere, outer core, inner core. Mantle (in geology) the thick layer of the earth beneath its outer crust. Our earth is divided into four main layers. The earth's upper layer (lithosphere) is divided into several tectonic plates that gradually migrate when considered in terms of its composition, the earth consists of the following major layers:
