Mount Mageik is a stratovolcano on the Alaska Peninsula. It has no confirmed historical eruptions (one in 1946 is now deemed questionable), but its youngest eruptive products are apparently Holocene in age (8750 to 500 BCE). A young crater lies on the northeast flank of the central summit cone, and is the site of vigorous superheated fumarolic activity with prominent sulfur deposits. The volcanic cones are composed of andesite, basaltic andesite and dacite. The volcano is mantled in ash from the 1912 eruption of Novarupta and from the 1953 eruption of nearby Trident Volcano. See also List of volcanoes in the United States References External links Volcanoes of the Alaska Peninsula and Aleutian Islands-Selected Photographs Alaska Volcano Observatory Stratovolcanoes of the United States Mountains of Alaska Volcanoes of Alaska Aleutian Range Volcanoes of Kodiak Island Borough, Alaska Volcanoes of Lake and Peninsula Borough, Alaska Mountains of Kodiak Island Borough, Alaska Mountains of Lake and Peninsula Borough, Alaska Holocene stratovolcanoes Pleistocene stratovolcanoes