Somma volcano
A somma volcano, also known as a sommian, is a volcanic caldera that has been partially filled by a new central cone. The type is named after Mount Somma, a stratovolcano in southern Italy with a summit caldera in which the upper cone of Mount Vesuvius has grown. Other examples of somma volcanoes can be found on Russia's Kamchatka Peninsula and the Kuril Islands, stretching south from Kamchatka to Hokkaidō, Japan.
Some examples of somma volcanoes are the following:
- Africa
- * Mount Meru
- * Pico do Fogo
- * Piton de la Fournaise
- * Teide, Pico Viejo, Montaña Blanca, and Las Canadas Crater
- Americas
- * Cosigüina
- * Tecapa
- * Mount Mazama and Wizard Island
- * Mount St. Helens and associated lava domes,
- Asia
- * Ebeko
- * Gunung Baru Jari
- * Kolokol Group: Kolokol, Berg, Borzov, Trezubetz
- * Anak Krakatoa : a partially submerged nested somma volcano.
- * Mount Batur
- * Krenitsyn Peak
- * Medvezhya
- * Milna
- * Pinatubo
- * Taal Volcano
- * Tengger caldera
- * Tondano caldera
- * Sakurajima
- * Tyatya
- * Urataman
- * Zarechny
- Europe
- * Alban Hills and Monte Cavo
- * Santorini caldera and Nea Kameni : a partially submerged somma volcano
- * Mount Pico
- * Vesuvius and Mount Somma
- * Vulcano and associated calderas
- Oceania
- * Mount Gharat