Because magma is melted rock.
ash,lava and magma,and molten rock.
they aren't made BY volcanos but they are made in the volcanos
Extrusive igneous rock.
Xenoliths.
volcanos
Volcanos
igneous rock
On the moon Miranda there are craters canyons cliffs plains mountains no volcanos and is made up of rock and sultrate ice
fragments of rock dust ash steam and gases
they are volcanos.
from volcanos that were on the moons surface long ago
it is made up of many volcanos.