286 articles
Volcán de Fuego
Volcán de Fuego (Chiq'aq', "Fireplace"), also known as Fuego volcano, is a persistently active basaltic stratovolcano in southern Guatemala and Central America's historically most active volcano.
Volcanic area
Volcanic area: a region containing volcanoes, volcanic landforms, or volcanic deposits. Also called volcanic region or volcanic field; about 1,350 potentially active volcanoes worldwide, 800 million people within 100 km, organized by tectonic setting.
Volcanic ash
Volcanic ash, also called volcanic dust, is hard, abrasive tephra finer than 2 mm thrown out by explosive eruptions, the most widespread volcanic hazard and a serious threat to aircraft.
Volcanic crater
A volcanic crater is an enclosed depression at or around a volcanic vent, formed by explosive eruption or ground collapse; a collapse more than 1 kilometer across is a caldera.
Volcanic explosivity index
The volcanic explosivity index (VEI) is a 0 to 8 scale proposed in 1982 by Chris Newhall and Stephen Self to compare explosive eruptions by tephra volume.
Volcanic field
A volcanic field is a cluster of volcanoes or an area covered by volcanic rocks, in which individual centers usually erupt only once; fields may span millions of years.
Volcanism of Iceland
Volcanism of Iceland, where the Mid-Atlantic Ridge crosses the Iceland plume, makes Iceland one of Earth's most volcanically active areas, averaging an eruption every four to five years.
Volcano
A volcano is a vent, or a landform built around one, on Earth or another planet through which molten rock, rock fragments, and gases erupt; most active ones encircle the Pacific as the Ring of Fire.
Vysoky
Vysoky (Vysokii, Visoky), volcano 300221, a 2,129 m Holocene stratovolcano in Kamchatka's Eastern Volcanic Arc, 4 km NE of Komarov; last confirmed eruption about 550 BCE (VEI 0), not the Slovak mountain Vysoká.
Whakaari / White Island
Whakaari / White Island, also called White Island, is an active volcano in the Bay of Plenty, New Zealand, some 48 km offshore; a 2019 eruption killed 22 tourists.
Yellowstone Caldera
Yellowstone Caldera: the 85 x 45 km volcanic depression formed by the Lava Creek Tuff eruption 640,000 years ago, youngest of three Yellowstone hotspot calderas, powering over 10,000 hydrothermal features and monitored by the Yellowstone Volcano Observatory.
Youngest Toba eruption
The Youngest Toba eruption was a VEI 8 supervolcanic eruption of the Toba volcano in northern Sumatra, Indonesia, about 74,000 years ago; its ash covered roughly 40 million km² of Earth's surface.
Yucamane
Yucamane (Yucamani), a 5,495 m Holocene stratovolcano in Tacna Region, southern Peru, southern edifice of the Yucamane-Calientes complex near Candarave; last confirmed eruption about 1320 BCE (VEI 5), ranked among the Central Volcanic Zone's highest-risk volcanoes and monitored at green alert by Peru's IGP.
Zhupanovsky
Zhupanovsky (Жупановский вулкан, Vakhilskaya Sopka) is a four-cone compound stratovolcano on Kamchatka, Russia, 2,899 m, last erupting 2013-2017 from the Priemysh cone.
Zimina
Zimina (Зимина) is an extinct volcanic massif of merged stratovolcanoes, 3,057-3,081 m, at the southeastern end of the Klyuchevskaya volcano group in Kamchatka, Russia; no Holocene eruptions are known.
Zitacuaro-Valle de Bravo
Zitacuaro-Valle de Bravo is a monogenetic volcanic field in central Mexico's Trans-Mexican Volcanic Belt, covering shield volcanoes, lava domes, and cinder cones near Zitacuaro and Valle de Bravo.