Petrology which focuses on the field of geology that studies rocks, and
the conditions of its formation. there are three branches of petrology,
associated with the three types of rocks : frozen, metamorphic, and
sedimentary. petrology word itself comes from the greek word petra,
which means stone.
- Igneous petrology focuses on the composition and structure of igneous rocks ( rocks like granite or basalt rock that has crystallized from melt to lava ). igneous rocks include volcanic and plutonic rocks.
- Petrology of sedimentary rocks focus on the composition and structure of sedimentary rocks ( rocks like sandstone or limestone that contains sediment particles bound to the matrix or finer material ).
- Metamorphic petrology focuses on the composition and structure of metamorphic rocks ( rocks like slate or marble stone that originated from sedimentary rocks or frozen, but already past the turn of the chemistry, mineralogy or structure due to the extreme conditions of pressure, temperature, or both )
