The Process Of Granite Formation

To form granite magma must first cool underground. The rocks in the earth s crust continuously undergo changes in their composition which leads to formation of other rocks. Granite is more common in continental crust than in oceanic crust and has a felsic composition.

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The decaying material releases a significant amount of heat which melts the rocks around it.

The process of granite formation.

Each rock has a unique formation process. This is an extremely slow process. Granite s formation inside the earth below what is known as the mantle layer is a layer of molten rock formed by radioactive elements that occur naturally as the ground breaks down and decays. 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 is actually made up of several different minerals including feldspar and quartz. The name appeared for the first time in works of the english botanists physician and philosopher caesalpinus in the 16th century. Granite is an intrusive igneous rock which is very hard crystalline and is visibly homogeneous in texture and forms by melting of continental rocks. Since the time required to form granite is rather long it is both a strong and valuable stone.

Many mineral deposits form near crystallizing granite bodies from the hydrothermal solutions that such bodies release. Granite is formed by the solidification of magma under the earth s surface. Formation of granite is explained below. 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. Granite crystallizes from silica rich magmas that are miles deep in earth s crust.

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