in the world
igneous rocks
There is no such thing as an "exclusive" rock. However, there are extrusive rocks. These are divisions of igneous rocks, or rocks that form from molten rock. Intrusive rocks form from molten rock that has cooled underground. They can also be called plutonic rocks. Extrusive rocks, also called volcanic rocks, form from molten rock that has formed at or above the surface.
Rhyolititcen rocks.
Igneous rocks are formed by the solidification of molten materials.
Sedimentary rock can be made up partially of igneous clasts, but igneous rock is igneous rock.
Yes. Volcanic rocks are extrusive igneous rocks.
Igneous rocks
No, igneous rocks are harder than sedimentary rocks on average.
extrusive igneous rocks =/
Some do. These are called extrusive igneous rocks. However a large portion of igneous rocks form beneath the surface. These are intrusive igneous rocks.
Yes. More exactly, intrusive igneous rocks.
Igneous Rocks - Rocks formed by crystallization from a melt (magma)