GEOLOGY

Detailed explanation-1: -The continental crust is composed of granitic rocks, which have even more silicon and aluminum than the basaltic oceanic crust and are less dense than basalt.

Detailed explanation-2: -Oceanic crust is generally composed of dark-colored rocks called basalt and gabbro. It is thinner and denser than continental crust, which is made of light-colored rocks called andesite and granite. The low density of continental crust causes it to “float” high atop the viscous mantle, forming dry land.

Detailed explanation-3: -Continental crust is less dense than oceanic crust (2.7 g/cm3 vs. 3 g/cm3), and it is much older. The oldest rocks in continental crust are about 4.4 billion years old, while the oldest oceanic crust only goes back about 180 million years. Finally, the two types of crust differ in their composition.

Detailed explanation-4: -A continental plate is a tectonic plate that consists primarily of continental crust. They are less dense and more felsic than an oceanic plate.

Detailed explanation-5: -Continental crust consists of less dense rock such as granite. Even though Continental crust is less dense (2.7 g/cm³) it is much thicker than oceanic crust because it consists of the rocks that make up the continents. Because the earth is very hot inside, a current of heat flows from the core to the crust.