Here's a breakdown:
* Igneous rocks form from the cooling and solidification of magma or lava. They are often found in the deeper parts of the continental crust.
* Sedimentary rocks form from the accumulation and cementation of sediments, such as sand, mud, and organic matter. They are typically found in the upper layers of the continental crust, including the shallow seabed.
* Metamorphic rocks form when existing rocks are transformed by heat, pressure, or chemical reactions. They can be found throughout the continental crust, often in areas where tectonic forces have been active.
The continental crust is thicker and less dense than the oceanic crust, which makes up the ocean floor. It is also generally older than the oceanic crust.