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Chagulak Island

Chagulak

Stratovolkan · United States · 1028 m

The eastern side of the Chagulak volcano is seen here in the foreground and Amukta is in the background. The two volcanoes join at depth but at the surface they are separated by 7 km of ocean.
The eastern side of the Chagulak volcano is seen here in the foreground and Amukta is in the background. The two volcanoes join at depth but at the surface they are separated by 7 km of ocean. · Foto: Photo by Fred Deines, 1992 (U.S. Fish and Wildlife Service). · Wikimedia Commons
Tipe
Stratovolkan
Negara
United States
Wilayah
North America Volcanic Regions / Aleutian Ridge Volcanic Arc
Ketinggian
1028 m
Koordinat
52.572, -171.138
Letusan terakhir
Tidak diketahui
Kondisi tektonik
Subduction zone / Intermediate crust (15-25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

The 3-km-diameter island of Chagulak is the exposed summit of a stratovolcano in the Islands of the Four Mountains group of the Aleutians. The sharp-topped summit is ~11 km NE of the summit of Amukta and 35 km W of Yunaska volcano. The visible edifice is steep and strongly eroded. No eruptions have been recorded and its age is not precisely known.

Ringkasan Wikipedia

Ringkasan Inggris

Chagulak Island is a small, uninhabited volcanic island in the Islands of Four Mountains group in the Aleutian Islands of southwestern Alaska, United States. The 1.9 mi (3.1 km)-wide island consists of a single cone that reaches an elevation of 3,747 ft. Chagulak is a stratovolcano and is separated from the nearby Amukta Island by a channel about 4.3 miles (6.9 km) 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" from the north shore.

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