Extrusive igneous rock
Intrusive igneous rock
Intrusive igneous rock (plutonic rock).
Intrusive igneous rock
Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.
Igneous rock that forms within the Earth is intrusive.
Intrusive igneous rock
Such rock is extrusive igneous rock.
Obsidian
Intrusive
When igneous rock forms on the Earth's surface, including on the ocean floor, it's called extrusive. It's called intrusive rock when it forms beneath Earth's surface, such as in mines.
The type of igneous rock that hardens under the earths surface is called the Intrusive Igneous Rock. Intrusive Igneous Rocks are of two main types, Hypabasal and Plutonic. The plutonic forms at deeper depths.
extrusive igneous rock