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volcano

(Encyclopedia) volcano, vents or fissures in the earth's crust through which gases, molten rock, or lava, and solid fragments are discharged. Their study is called volcanology. The term volcano is…

Pavlof Volcano

(Encyclopedia) Pavlof Volcano, active volcano, 8,177 ft (2,493 m) high, W Alaska Peninsula, SW Alaska, on the W shore of Pavlof Bay. It and its neighboring twin volcano, Pavlof Sister, 7,028 ft (2,…

Copahue

(Encyclopedia) Copahue, active volcano, 9,688 ft (2,953 m) high, on the central Argentina-Chile border. A stratovolcano (see volcano) consisting of an elongated composite cone with nine craters…

Sangay

(Encyclopedia) Sangay, active volcano, 17,343 ft (5,286 m) high, S central Ecuador. A symmetrical, glacier-capped, cone-shaped stratovolcano at the edge of the Amazon rainforest, it is the most…

San Cristóbal

(Encyclopedia) San CristóbalSan Cristóbalsän krēstōˈbäl [key], active volcano, c.5,725 ft (1,745 m) high, Chinandega dept., NW Nicaragua. Part of a complex of five volcanic mountains, it is the…

Cerro Azul

(Encyclopedia) Cerro Azul, volcano, 12,428 ft (3,788 m) high, central Chile, in the Andes c.150 mi (240 km) S of Santiago. Also known as Quizapú after the large vent on the northern flank of the…

Earth's Greatest Volcanic Field

The largest known concentration of active volcanoes on Earth was discovered by scientists aboard the research vessel Melville (Nov. 1992–Jan. 1993). The vast volcanic cluster is situated under the…

The Deadliest Volcanic Eruptions

The following table lists the deadliest volcanic eruptions in the world on record according to name, year, number of deaths, and major cause of deaths. In 1812, Tambora volcano in Indonesia erupted…

Mauna Loa

(Encyclopedia) Mauna LoaMauna Loamouˈnə lōˈə [key], volcano, 13,680 ft (4,170 m) high, in the S central part of the island of Hawaii, in Hawaii Volcanoes National Park, the largest active volcano in…