Kanaga Yellow Brown Olive Ash
Start: 2300 yBP [1]
Event Type: Explosive
- Tephrafall [1]
Description: From Kiriyanov and Miller (1987): "Ad-2 has a thickness ranging between 1 and 5 cm and consists of a yellowish-gray silt- and clay-size material and a small amount of fine-grained sand. Distinctive features of this ash are the small glass content (33-55%), a considerably large plagioclase content (24-28%) and 8-10% lithic debris. In addition to pyroxenes, the ash also contains green (9%) and brown (6%) hornblendes. The inferred age of the ash is 2300 14C years."
References Cited
[1] Volcanic ashes of Adak Island, Aleutian Islands, Alaska [Vulkanicheskiye peply na o-ve Adak (Aleutskiye o-va, SShA)], 1997
Kiriyanov, V. Y., and Miller, T. P., 1997, Volcanic ashes of Adak Island, Aleutian Islands, Alaska [Vulkanicheskiye peply na o-ve Adak (Aleutskiye o-va, SShA)]: Volcanology and Seismology [Vulkanologiya I Seysmologiya], v. 19, n. 1, p. 52-77.Complete Eruption References
Volcanic ashes of Adak Island, Aleutian Islands, Alaska [Vulkanicheskiye peply na o-ve Adak (Aleutskiye o-va, SShA)], 1997
Kiriyanov, V. Y., and Miller, T. P., 1997, Volcanic ashes of Adak Island, Aleutian Islands, Alaska [Vulkanicheskiye peply na o-ve Adak (Aleutskiye o-va, SShA)]: Volcanology and Seismology [Vulkanologiya I Seysmologiya], v. 19, n. 1, p. 52-77.
Preliminary volcano-hazard assessment for Kanaga Volcano, Alaska, 2002
Waythomas, C. F., Miller, T. P., and Nye, C. J., 2002, Preliminary volcano-hazard assessment for Kanaga Volcano, Alaska: U.S. Geological Survey Open-File Report 02-0397, 27 p., 1 sheet.
full-text PDF 38.5 MB
map sheet plate (PDF) 17.5 MB 
Holocene Tephra Layers on the Northern Half of Adak Island in the West-Central Aleutian Islands, Alaska, 2012
Okuno, M., Wada, K., Nakamura, T., Gualtieri, L., Sarata, B., West, D., and Torii, M., 2012, Holocene Tephra Layers on the Northern Half of Adak Island in the West-Central Aleutian Islands, Alaska, in West, D., Hatfield, V., Wilmerding, E., Lefevre, C. and Gualtieri, L. (eds.): The People Before: The Geology, Paleoecology and Archaeology of Adak Island, Alaska, Oxford, UK, p. 61-75.
