Which layer of the Earth is known for having a composition similar to granite?

The layer of the Earth known for having a composition similar to granite is the continental crust. Granite is an igneous rock that primarily consists of quartz, feldspar, and mica, which are abundant in the continental crust. This crust is the outermost layer of the Earth, where the landmasses reside, and it is generally thicker and less dense than the oceanic crust. The continental crust is predominantly composed of lighter materials, which is why its composition aligns closely with granite.

In contrast, the oceanic crust is primarily composed of basalt, which has a much different mineral composition than granite. The core, made primarily of iron and nickel, and the upper mantle, which consists of peridotite and is more mafic, also do not share the same composition as granite. Therefore, identifying the continental crust as the layer similar to granite highlights its unique characteristics in comparison to other Earth layers.