Chagulak Island (also spelled ''Chugul'', ''Chugula'', ''Chegoula'', or ''Tchougoulok''; russian: Чагулак) is a small, uninhabited

volcanic A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates a ...

island in the Islands of Four Mountains group in the

Aleutian Islands The Aleutian Islands (; ; ale, Unangam Tanangin,”Land of the Aleuts", possibly from Chukchi ''aliat'', "island"), also called the Aleut Islands or Aleutic Islands and known before 1867 as the Catherine Archipelago, are a chain of 14 large v ...

of southwestern

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S. ...

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

. The -wide island consists of a single cone that reaches an elevation of 3,747 ft (1,142 m). Chagulak is a stratovolcano and is separated from the nearby

Amukta Island Amukta (russian: Амукта) is a small yet mountainous island in the Islands of Four Mountains group lying between the Fox Islands and the Andreanof Islands in the Aleutian Islands. The nearest islands to it are Yunaska and Seguam Island; ...

by a channel about wide; though the two islands are joined underwater. No eruptions have been recorded and very little is known about the volcano, as the only study done on Chagulak so far is a single chemical analysis of a "low-potassium, high-alumina

basaltic andesite Basaltic andesite is a volcanic rock that is intermediate in composition between basalt and andesite. It is composed predominantly of augite and plagioclase. Basaltic andesite can be found in volcanoes around the world, including in Central Amer ...

" from the north shore.

Gallery

File:Chagulak Island.jpg, File:Alaska Maritime National Wildlife Refuge; Chagulak Island in the Aleutian Islands.jpg, File:Coastal view of Chagulak Island in Alaska with fog in the horizon.jpg, File:Panoramic view of Chagulak Island field crew in 1990.jpg,

References

Islands of Four Mountains Uninhabited islands of Alaska Islands of Alaska Islands of Unorganized Borough, Alaska Volcanoes of Alaska Holocene stratovolcanoes {{AleutiansWestAK-geo-stub