Types Of Rocks That Build The Earth 's Crust Essay
Types of rocks according on count of minerals:
Monomineralic, which are constructed only of one mineral
Polymineral, which are constructed of a number of mineral species.
According to their origin, they are divided into:
- Depths (granite, syenite, diorite, gabbro, peridotite) - Pouring (rhyolite, trachyte, dacite, andesite, basalt)
Igneous rocks are formed of cooled magma. Also known as “fire rock”. These type of rock are the most common type of rock in the Earth’s surface. Igneous rocks are also very important because their chemical and mineral makeup could be used to learn about the composition, temperature and pressure that exists within the Earth’s mantle. There are over 700 types of igneous rock, some are also formed on the surface as a result of volcanic activity. There are intrusive, extrusive and hypabyssal igneous rocks. Igneous rocks are…