igneisistä
Igneous rocks are one of the three main rock types, alongside sedimentary and metamorphic rocks. They are formed through the cooling and solidification of molten rock material, which can originate from beneath the Earth's surface as magma or erupt onto the surface as lava. The composition and texture of igneous rocks are determined by the conditions under which they cool and solidify.
There are two primary classifications of igneous rocks based on their formation location. Intrusive igneous rocks,
Extrusive igneous rocks, also called volcanic rocks, form when lava cools and solidifies rapidly on the Earth's