Types of Rock
Rocks are grouped according to their mode of formation, appearance and minerals composition. Based on this analysis, there are three types of rock. They are as follows:
- Igneous rock
- Sedimentary rock
- Metamorphic rock
Igneous Rock
This is formed as a result of high temperature and pressure beneath the earth’s crust which causes the liquid material (molten magma) below the earth surface to solidify or erupt in the form of a volcano. There are two types of igneous rock;
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