Here's why:
* Composition: Continental crust is primarily composed of granitic rocks, which are rich in silica and aluminum. These minerals tend to be lighter in color, often appearing pink, gray, or white. Oceanic crust, on the other hand, is mainly made up of basaltic rocks, which are denser and darker due to their higher content of iron and magnesium.
* Weathering: Over long periods, continental crust undergoes weathering, which can further lighten its color. This is because the minerals in granitic rocks are more susceptible to chemical weathering, leading to the formation of clays and other light-colored minerals.
While there are exceptions and variations within each type of crust, the general principle holds true: continental crust is generally lighter in color than oceanic crust.
