The Formation Of Granite

Granite is an intrusive igneous rock which means it was formed in place during the cooling of molten rock.

The formation of granite. 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. There are a variety of granite uses and the granite reserves are found in many countries around the world. They are crystallized by felsic melts that are less dense than mafia rocks and therefore tend to ascend to the surface. The rocks in the earth s crust continuously undergo changes in their composition which leads to formation of other rocks.

To form granite magma must first cool underground. Granite is formed by the solidification of magma under the earth s surface. Granite crystallizes from silica rich magmas that are miles deep in earth s crust. Granite formation took place millions of years ago.

Generally the slower the molten rock cooled the larger it s mineral crystals with k feldspar megacrysts forming in special circumstances greater than 5cm. Of these minerals feldspar predominates and quartz usually accounts for more than 10 percent. Stoping where the granite cracks the wall rocks and pushes upwards as it removes blocks of the. Granite is more common in continental crust than in oceanic crust and has a felsic composition.

Each rock has a unique formation process.