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.

The formation of granite.

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. Since the time required to form granite is rather long it is both a strong and valuable stone. Each rock has a unique formation process.

Granite crystallizes from silica rich magmas that are miles deep in earth s crust. 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. Granite is more common in continental crust than in oceanic crust and has a felsic composition.

Generally the slower the molten rock cooled the larger it s mineral crystals with k feldspar megacrysts forming in special circumstances greater than 5cm. Granite formation took place millions of years ago. This is an extremely slow process. Granite is formed by the solidification of magma under the earth s surface.

The rocks in the earth s crust continuously undergo changes in their composition which leads to formation of other rocks.