From holes in the ground that push up the melted rock
LAva
a Obsidion rock
a Obsidion rock
An opening in the Earth's crust where melted rock reaches the surface is called a volcano.
If it reaches the surface, it is magma or lava. If it merely intrudes into rocks already formed, it is intrusive. Such as sills and dikes.
When melted rock reaches Earth's surface, it cools quickly and solidifies to form an extrusive igneous rock. This rapid cooling prevents large mineral crystals from forming, resulting in a fine-grained texture. Common examples include basalt and rhyolite.
When melted rock reaches Earth's surface, it is called lava. Lava can flow out of volcanoes during an eruption, cooling and solidifying to form igneous rock.
Molten rock, when it hits the surface, is known as lava. Before it reaches the surface, it is known as magma.
Volcanoes do not cause rocks to melt, they are just the exit where melted rock come to the earths surface.
It is called magma
i think the answer your looking for is igneous rock.....that is the type of rock you get after megma cools.....
Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.