Somma Volcano

A somma volcano (also known simply as a sommian) 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 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).

Some examples of somma volcanoes are the following:

Aira Caldera (Kyūshū, Japan)
Cosigüina (Chinandega, Nicaragua)
Ebeko (Paramushir Island, Kuril Islands, Russia)
Kolokol Group: Kolokol, Berg, Borzov, Trezubetz (Urup Island, Kuril Islands, Russia)
Medvezhya (Iturup Island, Kuril Islands, Russia)
Milna (Simushir Island, Kuril Islands, Russia)
Pinatubo (Central Luzon, Philippines)
Teide (Tenerife, Canary Islands, Spain)
Tondano Caldera (North Sulawesi, Indonesia)
Tyatya (Kunashir Island, Kuril Islands, Russia)
Urataman (Simushir Island, Kuril Islands, Russia)
Vesuvius (Italy)
Zarechny (Kamchatka Peninsula, Russia)

Volcanoes

Volcano types	Bimodal volcanism Caldera Cinder cone Complex volcano Fissure vent Lava dome Maar Mud volcano Parasitic cone Pyroclastic shield Shield volcano Somma volcano Stratovolcano Subglacial volcano Submarine volcano Supervolcano Volcanic cone Volcanic field

Volcanic rocks	Volcanic rock Agglomerate Andesite Ashstone Basalt Basaltic andesite Benmoreite Dacite Rhyolite Tuff

List and volcanoes groups	Lists of volcanoes Decade Volcanoes Volcanic belt

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Famous quotes containing the word volcano:

“We are like travellers using the cinders of a volcano to roast their eggs. Whilst we see that it always stands ready to clothe what we would say, we cannot avoid the question whether the characters are not significant of themselves.”
—Ralph Waldo Emerson (1803–1882)