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Group of volcanoes, each of which erupts repeatedly
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
.
See also
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References
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