Igneous rock formed at or near the surface is referred to as extrusive igneous rock, such as basalt and obsidian.
Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.
Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.
Intrusive igneous rock forms from the cooling of magma below the surface. Granite, for example.
Intrusive igneous rock.
intrusive igneous rock
Igneous rock that forms within the Earth is intrusive.
Extrusive igneous rock
Igneous rock that forms beneath Earth's surface is called
Such rock is extrusive igneous rock.
Intrusive igneous rock
Intrusive igneous rock (plutonic rock).
a Obsidion rock