However, granite is a common and characteristic rock type of continental crust. While it can be found in very small amounts in oceanic crust, it's overwhelmingly associated with continents.
Here's why:
* Formation: Granite forms from the slow cooling and crystallization of magma deep within the Earth. This process is more common in the thicker, less dense continental crust.
* Composition: Granite is rich in silica (SiO2), potassium (K), and sodium (Na), elements that are more abundant in continental crust than in oceanic crust.
* Density: Granite is less dense than the basalt that makes up the majority of oceanic crust, which contributes to the elevation of continents above sea level.
While there isn't a single material exclusive to continental crust, granite is a good example of a rock type that is strongly associated with continents.
