It is not
The crust alone contains millions of different layers of sedimentary rock. For the layers of the Earth, some of which are rock and some of which are not, see the related link below.
Crust, Mantle, Core. The Crust is about 10 miles thick.
The 2 layers of the continental crust are oceanic crust and the land crust
The Earth's crust consists of two main sub-layers: the continental crust and the oceanic crust. The continental crust is thicker, primarily composed of granitic rocks, and forms the continents. In contrast, the oceanic crust is thinner, predominantly made up of basaltic rocks, and underlies the ocean basins. These sub-layers differ in composition, thickness, and density.
crust and mantle
The lithosphere is divided into two layers: the crust and the upper part of the mantle. The crust includes the Earth's outermost layer that is divided into continental and oceanic crust. The upper part of the mantle beneath the crust is known as the asthenosphere.
The crust and the mantle are the two layers of the Earth that are made predominantly of rocks. The crust is the outermost layer and is divided into continental and oceanic crust, while the mantle lies beneath the crust and is composed of solid rock.
Crust and mantle
Crust and mantle
The two layers that make up the lithosphere are the crust and the upper part of the mantle. The crust is the outermost layer of the Earth, while the upper mantle is the solid part of the mantle that lies just below the crust. These two layers together form the rigid outer shell of the Earth known as the lithosphere.
The Earth's crust is composed of two layers: the continental crust, which makes up the landmasses, and the oceanic crust, which forms the seafloor. These two crustal layers differ in composition, thickness, and density.
The two layers beneath the Earth's crust are the mantle and the core. The mantle is a layer of hot, solid rock that extends about 1,800 miles below the crust, while the core is made up of a liquid outer core and a solid inner core composed of iron and nickel.