Rocks

Rocks Igneous

Igneous rocks is one of the main rock types, it is formed by magma, cool it down to become a solid. This magma can be derived from partial melts. Igneous rocks are also called fire rocks, its formed underground or above ground. Extrusive igneous rocks are formed at the crust's surface as a result of the partial melting of rocks within the mantle and crust. Extrusive Igneous rocks cool and solidify quicker than intrusive igneous rocks. Since the rocks cool very quickly they are fine grained.

Sedimentary Sedimentary rock is a type of rock that is formed by material at the Earth's surface and within bodies of water. Sedimentation is the collective name for processes that cause mineral particles to settle and accumulate or minerals to precitipate from a solution. Particles that form a sedimentary rock by accumulating are called sediment. Before being deposited, sediment was formed by weathering in a source area, and then transported to the place of deposition by water, wind and others.

Metamorphic Metamorphic rock is the result of the transformation of an existing rock type, the protolith, in a process called metamorphism, which means "change in form". The protolith is subjected to heat and pressure (temperatures greater than 150 to 200 °C and pressures of 1500 bars) causing profound physical and/or chemical change. Contact metamorphism is the name given to the changes that take place when magma is injected into the surrounding solid rock.