The Formation Of Granite

Granite is formed by the solidification of magma under the earth s surface.

The formation of granite.

Granite crystallizes from silica rich magmas that are miles deep in earth s crust. Granite is more common in continental crust than in oceanic crust and has a felsic composition. The rocks in the earth s crust continuously undergo changes in their composition which leads to formation of other rocks. There are a variety of granite uses and the granite reserves are found in many countries around the world.

To form granite magma must first cool underground. Of these minerals feldspar predominates and quartz usually accounts for more than 10 percent. Granite is an intrusive igneous rock which means it was formed in place during the cooling of molten rock. They are crystallized by felsic melts that are less dense than mafia rocks and therefore tend to ascend to the surface.

Stoping where the granite cracks the wall rocks and pushes upwards as it removes blocks of the. This is an extremely slow process. Granitic magma must make room for itself or be intruded into other rocks in order to form an intrusion and several mechanisms have been proposed to explain how large batholiths have been emplaced. Each rock has a unique formation process.

Since the time required to form granite is rather long it is both a strong and valuable stone.