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Somma volcano

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Title: Somma volcano  
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Subject: Mount Vesuvius, Polygenetic volcanic field, Caldera, Volcanoes, Basaltic andesite
Collection: Volcanology
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Somma volcano

A somma volcano (also known simply as a sommian) or a somma stratovolcano is a volcanic caldera that has been partially filled by a new central cone. The name comes from Mount Somma, a stratovolcano in southern Italy with a summit caldera in which the upper cone of Mount Vesuvius has grown.

A number of the world's best examples of somma volcanoes are found on Russia's Kamchatka Peninsula and the Kuril Islands that stretch south from Kamchatka to Hokkaidō (Japan).

Aerial view of Fogo Island, Cape Verde, an example of a somma volcano. The volcanic cone Pico do Fogo rises just 100m above the walls of the caldera.

Some examples of somma volcanoes are the following:

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