qfaults web comp As of January 12, 2017, the USGS maintains a limited number of metadata fields that characterize the Quaternary faults and folds of the United States. For the most up-to-date information, please refer to the interactive fault map.

Alaska-Aleutian subduction zone, Aleutian megathrust (Class A) No. 5269a

Last Review Date: 2012-07-01

Compiled in cooperation with the Alaska Department of Natural Resources

County(s) and State(s) ALEUTIANS WEST CENSUS AREA, ALASKA (offshore)
KODIAK ISLAND BOROUGH, ALASKA (offshore)
ALEUTIANS EAST BOROUGH, ALASKA (offshore)
Physiographic province(s) PACIFIC BORDER RANGES (offshore)
Reliability of location
Compiled at 1:250,000 scale.
Length (km) This section is 4338 km of a total fault length of 6350 km.
Average strike S. 76° W.
Sense of movement Thrust
Dip Direction NW
Historic earthquake The Alaska earthquake 1964
Most recent prehistoric deformation historic
Slip-rate category Greater than 5.0 mm/yr
References Atwater, T., 1970, Implications of plate tectonics for the Cenozoic tectonic evolution of western North America: Geological Society of America Bulletin, v. 81, p. 3513-3536.

Bird, P., 1996, Computer simulations of Alaskan neotectonics: Tectonics, v. 15, no. 2, p. 225–236.

Bird, P., 2003, An updated digital model of plate boundaries: Geochemistry Geophysics Geosystems, v. 4, no. 3, p. 1,027, doi:10.1029/2001GC000252

Biswas, N.N., and Tytgat, G., 1988, Intraplate seismicity in Alaska: Seismological Research Letters, v. 59, no. 4, p. 227–233.

Brocher, T.M., Fuis, G.S., Fisher, M.A., Plafker, G., and Moses, M.J., 1994, Mapping the megathrust beneath the northern Gulf of Alaska using wide-angle seismic data: Journal of Geophysical Research, v. 99, no. B6, p. 11,663-11,685.

Buscher, J.T., Spotila, J.A., and Meigs, A., 2002, Glacial erosion as a primary control on landscape evolution of the active Chugach/St.Elias Range of southern Alaska (Poster), EOS (Transactions, American Geophysical Union), 83(47), Fall Meet. Suppl., Abstract T71B-1173.

Coats, R.R., 1950, Volcanic Activity in the Aleutian Arc, in U.S. Geological Survey Bulletin 974-B: p. 35-47.

Cooper, A.K., Marlow, M.S., Scholl, D.W., and Stevenson, A.J., 1992, Evidence for Cenozoic crustal extension in the Bering Sea region: Tectonics, v. 11, no. 4, p. 719-731.

Dames & Moore, 1991, Geologic and Seismic Studies, Trans-Alaska gas system, Anderson Bay LNG terminal, Port Valdez, Alaska.

DeMets, C., Gordon, R.G., Argus, D.F., and Stein, S., 1990, Current plate motions: Geophysical Journal International, v. 101, p. 425-478.

Dillon, J.T., 1977, Earthquake recurrence and location in the western Gulf of Alaska, in Short notes on Alaskan geology - 1977: Alaska Division of Geological & Geophysical Surveys Geologic Report 55, p. 43-47.

Doig, R., 1998, Paleoseismological evidence from lake sediments for recent movement of the Denali and other faults, Yukon Territory, Canada: Tectonophysics, v. 296, p. 363-370.

ESRI, 2011, Ocean_Basemap, ESRI, scale range 1:591,657,528 down to 1:1,155,581

Fuis, G.S., and Clowes, R.M., 1993, Comparison of deep structure along three transects of the western North American continental margin: Tectonics, v. 12, no. 6, p. 1,420-1,435.

Gibson, W., and Nichols, H., 1953, Configuration of the Aleutian Ridge: Rat Islands-Semisopochnoi Island to west of Buldir Island: Geological Society of America Bulletin, v. 64, p. 1173-1188.

Grantz, A., 1966, Strike-slip faults in Alaska: U.S. Geological Survey Open-File Report 66-53, 82 p., https://pubs.er.usgs.gov/publication/ofr6653.

Jacob, K.H., 1986, Seismicity, tectonics, and geohazards of the Gulf of Alaska regions, in Hood, D.W., and Zimmerman, S.T., eds., The Gulf of Alaska—Physical environment and biological resources: Washington, D.C., Government Printing Office, p. 145–184.

Kanamori, H., 1977, The energy release in great earthquakes: Journal of Geophysical Research, v. 82, p. 2981-2987.

Koehler, R.D., Farrell, R-E., Burns, P.A.C., and Combellick, R.A., 2012, Quaternary faults and tolds in Alaska—A digital database: Alaska Division of Geophysical and Geophysical Surveys Miscellaneous Publication 141, 31 p, 1 sheet, scale 1:3,700,000. doi:10.14509/23944.

Kozhurin, A.I., and Trifonov, V.G., 1982, Young strike-slip faults of the Pacific margin: Geotectonics, v. 16, no. 2, p. 93-104.

Lahr, J.C., and Plafker, G., 1980, Holocene Pacific-North American plate interaction in southern Alaska—Implications for the Yakataga seismic gap: Geology, v. 8, p. 483–486.

Lahr, J.C., Stephens, C.D., and Page, R.A., 1985, Regional seismic monitoring in southern Alaska: Application to earthquake hazards assessment, in Hays, W.W., and Gori, P.L., eds., A workshop on "Evaluation of Regional and Urban Earthquake Hazards and Risk in Alaska," Proceedings of Conference XXXI: U.S. Geological Survey Open-File Report 86-79, p. 64-75.

Lallemant, H.G.A., and Oldow, J.S., 2000, Active displacement partitioning and arc-parallel extension of the Aleutian volcanic arc based on Global Positioning System geodesy and kinematic analysis: Geology, v. 28, no. 8, p. 739-742.

Lundgren, P., Saucier, F., Palmer, R., and Langon, M., 1995, Alaska crustal deformation—Finite element modeling constrained by geologic and very long baseline interferometry data: Journal of Geophysical Research, v. 100, no. B11, p. 22,033–22,045.

Mann, D.H., and Crowell, A.L., 1994, Post-glacial sea level changes in the Kenai Fjords and Katmai areas, southern Alaska [abs.]: Geological Society of America Abstracts with Programs, v. 26, no. 7, p. 138-139.

Nishenko, S.P., and Jacob, K.H., 1990, Seismic potential of the Queen Charlotte-Alaska-Aleutian seismic zone: Journal of Geophysical Research, v. 95, p. 2511-2532.

Packer, D.R., Brogan, G.E., and Stone, D.B., 1975, New data on plate tectonics of Alaska: Tectonophysics, v. 29, p. 87-102.

Plafker, G., 1969, Tectonics of the March 27, 1964 Alaska Earthquake: U.S. Geological Survey Professional Paper 543-I, 74 p., 2 sheets, scales 1:2,000,000 and 1:500,000.

Plafker, G., and Rubin, M., 1978, Uplift history and earthquake recurrence as deduced from marine terraces on Middleton Island, Alaska, in Proceedings of conference VI, methodology for identifying seismic gaps and soon-to-break gaps: U.S. Geological Survey Open-File Report 78-943, p. 687-721.

Plafker, G., Bruns, T.R., and Page, R.A., 1975, Interim report on petroleum resource potential and geologic hazards in the outer continental shelf of the Gulf of Alaska Tertiary province: U.S. Geological Survey Open File Report 75-592, 74 p., 1 sheet, approximately 1:190080 scale.

Plafker, G., Gilpin, L.M., and Lahr, J.C., 1994, Neotectonic map of Alaska, in Plafker, G., and Berg, H.C., eds., Geology of Alaska, Geology of North America, in Decade of North American Geology: Boulder, Geological Society of America, v. G-1, plate 12, 1 sheet, 1:2,500,000 scale.

Plafker, G., Lajoie, K.R., and Rubin, M., 1992, Determining recurrence intervals of great subduction zone earthquakes in southern Alaska by radiocarbon dating, in Taylor, R.E., Long, A., and Kra, R.S., eds., Radiocarbon after four decades: An interdisciplinary perspective: New York, Springer-Verlag, p. 436-453.

Redfield, T.F., and Fitzgerald, P.G., 1993, Denali fault system of southern Alaska—An interior strike-slip structure responding to dextral and sinistral shear coupling: Tectonics, v. 12, no. 5, p. 1195–1208.

Sauber, J., and Carver, G., 2001, Topography and surface change at the shallow subduction zone near Kodiak Island, Alaska, EOS (Transactions, American Geophysical Union), 82(47), Fall Meet. Suppl., Abstract G22B-0221.

Sauber, J., and Carver, G.A., 2002, Ongoing uplift rates and topography across the Aleutian forearc region on Kodiak Island, Alaska (Poster), Eos. Trans; EOS (Transactions, American Geophysical Union), 83(47), Fall Meet. Suppl., Abstract T71B-1174.

Schmoll, H.R., Yehle, L.A., and Updike, R.G., 1999, Summary of Quaternary geology of the Municipality of Anchorage, Alaska: Quaternary International, v. 60, p. 3-36.

Seeber, L., and Armbruster, J., 1979, The Himalayan and the Alaska-Aleutian convergence zones: A similar pattern of active crustal tectonics and seismicity [abs.]: EOS, American Geophysical Union Transactions, v. 60, no. 18, p. 390.

Sieh, K.E., 1981, A review of geological evidence for recurrence times of large earthquakes, in Simpson, D.W., and Richards, P.G., eds., Earthquake prediction: An international review: American Geophysical Union, p. 680.

Sykes, L.R., 1971, Aftershock zones of great earthquakes, seismicity gaps, and earthquake prediction for Alaska and the Aleutians: Journal of Geophysical Research, v. 76, p. 8021-8041.

von Huene, R., 1979, Structure of the outer convergent margin off Kodiak Island, Alaska, from multichannel seismic records: American Association of Petroleum Geologists Memoir, v. 29, p. 261–272.

von Huene, R., Fisher, M.A., Bruns, T.R., and Shor, G.G., Jr., 1979, Continental margins of the Gulf of Alaska and late Cenozoic tectonic plate boundaries, in Sisson, A., ed., The relationship of plate tectonics to Alaskan geology and resources; Proceedings of the Alaska Geological Society Symposium: Anchorage, Alaska Geological Society, v. 6, p. J 1-33.

Woodward-Clyde Consultants, 1978, Offshore Alaska seismic exposure study.

Woodward-Clyde Consultants, 1982, Anchorage office complex geotechnical investigation, Anchorage, Alaska.

Woodward-Clyde Consultants, 1987, Final report, geotechnical investigation, Anchorage courthouse addition, Anchorage, Alaska.

Yeats, R.S., Sieh, K., and Allen, C.R., 1997, The geology of earthquakes: New York, Oxford University Press, 568 p.