A polygenetic volcanic field is a volcanic field of scattered volcanic vents. These volcanic fields, containing numerous polygenetic volcanoes, are noted for having more than one eruptive event from the same vent(s), rather than the more common monogenetic volcanic field. Polygenetic volcanic fields generally occur where there is a high-level magma chamber. These volcanic fields may show lithological discontinuities due to major changes in magma chemistry, volcanotectonic events, or long erosional intervals, and may last over 10 million years.
Unlike monogenetic volcanic fields, volcanoes in polygenetic fields reach massive sizes, such as Mauna Loa, which is the world's largest active volcano.
Some types of volcanoes include shield volcanoes, stratovolcanoes, complex volcanoes, somma volcanoes and calderas.