Question: igneous rock formed from lava that erupted onto earth's surface is called?
Answer: Extrusive rock is igneous rock formed from lava that erupted onto Earth's surface. Basalt is the most common extrusive rock. Basalt forms much of the crust, including the oceanic crust, shield volcanoes, and lava plateaus. Igneous rock that formed when magma hardened beneath Earth's surface is called intrusive rock.