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in 1770, presumably the same volcano; conversely, Dall (1870, citing
Grewingk, 1850) describes a cessation of activity at Amukta in 1770. On February 13, 1963 an eruption occurred involving the central crater and one or more parasitic vents; both ash and lava were produced (Anchorage Times, February
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In late August and early
September 1987, a commercial pilot observed a 10.5 km high eruption plume rising through cloud cover near Amukta Island. On September 4, another pilot observed a small dark ash plume issuing from the summit of Amukta (Smithsonian Institution, 1987). On Sept. 18, yet
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11, 1963; Decker, 1967). Persistent low clouds obscured the exact source of the lava, but the flow was seen to extend from the west side of the cone southwest into the sea at
Traders Cove (Bulletin of Volcanic Eruptions, 1963).
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by T.P. Miller, R.G. McGimsey, D.H. Richter, J.R. Riehle, C.J. Nye, M.E. Yount, and J.A. Dumoulin. U.S. GEOLOGICAL SURVEY Open-File Report 98-582, 104 pages, 102 figures. Alaska
Volcano Observatory, Alaska, 1998.
385:, and McGimsey, R. G., 1997, 1996 volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Open-File Report OF 97-0433, 34 p.
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Well documented reports of historical Amukta volcanism are sparse; activity was noted from 1786 to 1791, and again in 1876 (Coats, 1950). Petroff (1884, citing
Grewingk, 1850) lists activity at
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imagery to be built upon a 300+ meter high, east-west trending arcuate ridge. Extensions of that ridge on the southwest and east sides of the island indicate an older
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Petroff, Ivan, 1884, The volcanic region of Alaska: in
Population, Industries, and Resources of Alaska, Washington DC, Government Printing Office, p. 93-96.
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In early July 1996, a passing ship reported a 1-km high plume of "ash and smoke" (Neal and McGimsey, 1997). On August 28
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Coats, R. R., 1963, Aleutian
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approximately 6 km in diameter and open to the sea on the south side. No hot springs or
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have been reported from Amukta. Sekora (1973, p. 29) reports the presence of a
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Dall, W. H., 1870, Alaska and its resources: Boston, Lee and
Shepard, 627 p.
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269:Igneous rocks produced by this volcano range from
291:List of volcanoes in the United States of America
475:Landforms of Aleutians West Census Area, Alaska
246:another pilot reported a 300m-high ash plume.
189:makes up most of nearly circular, 7.7-km-wide
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433:. Fairbanks: Alaska Native Language Center.
229:near the northeastern shore of the island.
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351:Learn how and when to remove this message
495:Volcanoes of Unorganized Borough, Alaska
490:Mountains of Unorganized Borough, Alaska
314:This article includes a list of general
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205:chain. The nearest islands to it are
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450:Stratovolcanoes of the United States
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413:Alaska Volcano Observatory
203:Islands of Four Mountains
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395:Global Volcanism Program
215:synthetic-aperture radar
400:Smithsonian Institution
335:more precise citations.
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260:Map of Amutka Island.
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30:Mt. Amukta, June 1972
465:Volcanoes of Alaska
460:Mountains of Alaska
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485:Calderas of Alaska
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74:52.500°N 171.250°W
36:Highest point
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164:Aleutian Arc
111:Parent range
103:Alaska, U.S.
19:Mount Amukta
333:introducing
265:Composition
227:cinder cone
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52:Coordinates
444:Categories
405:2021-06-27
341:April 2009
316:references
195:Amuux̂tax̂
175:March 1997
131:Amukta C-4
275:monzonite
223:fumaroles
153:Volcanic
90:Geography
42:Elevation
429:(1994).
390:"Amukta"
285:See also
239:Amukhton
124:Topo map
95:Location
65:171°15′W
329:improve
297:Sources
271:granite
219:caldera
207:Yunaska
136:Geology
62:52°30′N
318:, but
279:basalt
199:Aleut
209:and
159:belt
129:USGS
273:to
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