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The top component of the Earth's Lithosphere distinguished from the underlying bottom component of Lithosphere by its chemical makeup;
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composition.
It consists of two components:
| Constituting Rocks | Thickness | |
| Sedimentary Cover | Sedimentary Rocks | 5% of the total Crust thickness |
| Crust Basement | Igneous Rocks | 95% of the total Crust thickness |
| Metamorphic Rocks |
The Sedimentary Cover overlays the Crust Basement but in some areas it may be eroded exposing the Crust Basement to the surface.
See also
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Natural Science / Geoscience / Earth's Structure
[ Geology ]