Somma volcano
 |
Asomma volcano,also known as asommian,is avolcaniccalderathat has been partially filled by a new centralcone.The type is named afterMount Somma( "Summit" ), astratovolcanoinsouthern Italywith a summit caldera in which the upper cone ofMount Vesuviushas grown. Other examples of somma volcanoes can be found on Russia'sKamchatka Peninsulaand theKuril Islands,stretching south from Kamchatka toHokkaidō,Japan.[citation needed]
Some examples of somma volcanoes are the following:
- Africa
- Mount Meru(Arusha Region,Tanzania)
- Pico do Fogo(Fogo Island,Cape Verde)
- Piton de la Fournaise(Réunion,France)
- Teide,Pico Viejo,Montaña Blanca,andLas Canadas Crater(Tenerife,Canary Islands,Spain)
- Americas
- Cosigüina(Chinandega,Nicaragua)
- Tecapa(Usulután Department,El Salvador)
- Mount Mazama(Crater Lake) andWizard Island(Oregon,United States)
- Mount St. Helensand associatedlava domes,(Washington,United States)
- Asia
- Ebeko(Paramushir Island,Kuril Islands, Russia)
- Gunung Baru Jari (Segara Anakcaldera,Lombok,Indonesia)
- Kolokol Group:Kolokol, Berg, Borzov, Trezubetz (Urup Island,Kuril Islands, Russia)
- Anak Krakatoa(Krakatoa archipelago,Sunda Strait,Lampung,Indonesia): a partially submerged nested somma volcano (with a central cone within a caldera which is itself within a larger caldera).
- Mount Batur(Bali,Indonesia)
- Krenitsyn Peak (Tao-Rusyr caldera,Onekotan Island,Kuril Islands, Russia)
- Medvezhya(Iturup Island,Kuril Islands, Russia)
- Milna(Simushir Island,Kuril Islands, Russia)
- Pinatubo(Central Luzon,Philippines)
- Taal Volcano(Batangas,Philippines)
- Tengger caldera(East Java,Indonesia)
- Tondano caldera(North Sulawesi,Indonesia)
- Sakurajima(Aira caldera,Kyūshū,Japan)
- Tyatya(Kunashir Island,Kuril Islands, Russia)
- Urataman(Simushir Island,Kuril Islands, Russia)
- Zarechny (Kamchatka Peninsula, Russia)
- Europe
- Alban HillsandMonte Cavo(Lazio,Italy)
- Santorini calderaandNea Kameni(Santorini,South Aegean,Greece): a partially submerged somma volcano
- Mount Pico(Azores,Portugal)
- VesuviusandMount Somma(Campania,Italy)
- Vulcanoand associatedcalderas(Aeolian Islands,Sicily,Italy)
- Oceania
- Mount Gharat(Gaua,Vanuatu)
