The Formation Of Granite

Generally the slower the molten rock cooled the larger it s mineral crystals with k feldspar megacrysts forming in special circumstances greater than 5cm.

The formation of granite.

Granite is more common in continental crust than in oceanic crust and has a felsic composition. They are crystallized by felsic melts that are less dense than mafia rocks and therefore tend to ascend to the surface. Granite formation took place millions of years ago. Each rock has a unique formation process.

There are a variety of granite uses and the granite reserves are found in many countries around the world. 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. Stoping where the granite cracks the wall rocks and pushes upwards as it removes blocks of the. The rocks in the earth s crust continuously undergo changes in their composition which leads to formation of other rocks.

Since the time required to form granite is rather long it is both a strong and valuable stone. The alkali feldspars are often pink resulting in the pink granite often used as a decorative stone. 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.

This is an extremely slow process.