A polygenetic volcanic field is a group of polygenetic volcanoes, each of which erupts repeatedly, in contrast with monogenetic volcanoes, each of which erupts only once.^[1] 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 volcanoes, polygenetic volcanoes reach massive sizes, such as Mauna Loa, which is the world's largest active volcano.

Polygenetic volcanoes include stratovolcanoes, complex volcanoes, somma volcanoes, shield volcanoes and calderas.

References

^ Walker, George P. L. (2000). "Basaltic volcanoes and volcanic systems". In Sigurdsson, Haraldur (ed.). Encyclopedia of Volcanoes.

v t e Volcanoes
Types	Caldera Cinder cone Complex volcano Cryovolcano Cryptovolcanic structure Fissure vent Lava cone Lava dome Maar Mud volcano Parasitic cone Pyroclastic cone Pyroclastic shield Rootless cone Shield volcano Somma volcano Stratovolcano Subglacial volcano Submarine volcano Supervolcano Volcanic cone
Volcanic rocks	Agglomerate Andesite Basalt Basaltic andesite Benmoreite Blairmorite Cinder Dacite Felsite Komatiite Latite Leucitite Nephelinite Obsidian Phonolite Phonotephrite Pumice Rhyodacite Rhyolite Tephriphonolite Trachyandesite Trachybasalt Trachyte Tuff
Lists and groups	Hotspot Lists of volcanoes Eruptions by death toll Decade Volcanoes Volcanic arc Volcanic belt Volcanic field monogenetic polygenetic
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References