extrusive igneous rock
i think lava
When molten rock erupts onto Earth's surface, it forms lava flows and igneous rock formations. The type of igneous rock formed depends on the composition of the magma and the speed of cooling. Each eruption can create unique landforms like volcanoes, lava plateaus, and volcanic islands.
Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.
Igneous rock that forms below the Earth's surface is intrusive.
Intrusive igneous rock
Such rock is extrusive igneous rock.
Obsidian
Intrusive igneous rock (plutonic rock).
a Obsidion rock
Intrusive igneous rock
extrusive because it forms on or near earths surface
Intrusive igneous rock