Geology Lab

Igneous 

Igneous Rocks are created when magma or lava hardens.


Granite:

Granite is one of the most notable and widely used igneous rocks due to its widespread use in buildings and monuments. One great example of a notable igneous rock is that of Stone Mountain which is the largest piece of exposed granite in the world.



Metamorphic Rocks

Metamorphic Rocks are created when heat, pressure, and chemical processes combine to act upon rocks underneath the Earth's surface.


The most notable metamorphic rock would be marble because of its widespread use in building statues and other monuments. It is formed when limestone is subjected to heat and pressure and it can even be crushd into a very fine powder.




Sedimentary Rocks

Sedimentary Rocks are formed via the gradual accumulation of sediments over many years.

A notable example of a sedimentary rock would be Coal which is used as fuel source by various nations. Coal is formed via fossilized ferns and plant matter which are slowly compacted before forming the rock.