Polygenetic volcano

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[Monogenetic and polygenetic volcanoes]
The type of volcano (size, structure, shape) is determined by both (1) the nature of the eruption, i.e., the viscosity and volume of magma, the type and duration of the eruption, and the shape of the crater (point or fissure), and (2) the environment in which the eruption occurred, i.e., whether it was underwater, under the atmosphere, or in a low-gravity field such as on the moon. Of these, the biggest difference in type of volcano is whether it is a monogenetic volcano formed by one eruption or a polygenetic volcano formed by multiple eruptions in (1), and whether it is under the atmosphere or under the water in (2). Below, we will mainly explain land volcanoes.

*Some of the terminology that mentions "polygenetic volcano" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

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【単成火山と複成火山】
　火山の型(大きさ，構造，形態)は，(1)噴火の性質，すなわちマグマの粘性と噴出量，噴火型式と噴火の継続時間，火口の形(点的か割れ目か)などと，(2)噴火の起こった環境，すなわち水底か大気底か，あるいは月などのような低重力場か，などの両方に支配されてできあがる。これらのうち，(1)では1輪廻の噴火でできた単成火山monogenetic volcanoであるか多数輪廻の噴火を繰り返してできた複成火山polygenetic volcanoであるかという違い，(2)では大気底か水底かという違いが火山の型に最も大きな相違を生む。以下，主として陸上火山について説明する。…

※「polygenetic volcano」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報