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Jumbo Dome

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5 km
3 mi
Leaflet U.S. Department of the Interior | U.S. Geological Survey | Policies

Facts

  • Official Name: Jumbo Dome
  • Seismically Monitored: No
  • Color Code: UNASSIGNED
  • Alert Level: UNASSIGNED
  • Elevation: 1369m (4491ft)
  • Latitude: 63.975
  • Longitude: -148.69444
  • Smithsonian VNum:
  • Pronunciation:
  • Nearby Towns:
    • Ferry 9 mi (14 km) NW
    • Healy 12 mi (19 km) SW
    • Denali Borough 12 mi (19 km) SW
    • McKinley Park 18 mi (29 km) SW
    • Anderson 30 mi (47 km) NW

    Distance from Anchorage: 194 mi (313 km)

Description

From Albanese (1980) [1] : "Jumbo Dome is a large cylindrical plug of hornblende andesite 1.6 km long, 1.3 km wide, and 500 m high which intrudes the Devonian Keevy Peak Formation basement and overlying Tertiary Suntrana Formation." Ar/Ar dating by Athey and others (2006) [2] yields an age for Jumbo Dome of 1.026 +/- 0.057 Ma.

Name Origin

"Jumbo Dome" is a local name reported in 1906 by L.M. Prindle (Orth, 1971).

References Cited

[1] The geology of three extrusive bodies in the Central Alaska Range, 1980

Albanese, Mary, 1980, The geology of three extrusive bodies in the Central Alaska Range: University of Alaska Fairbanks unpublished M.S. thesis, 104 p.

[2] Bedrock geologic map of the Liberty Bell area, Fairbanks A-4 Quadrangle, Bonnifield mining district, Alaska, 2006

Athey, J.E., Newberry, R.J., Werdon, M.B., Freeman, L.K., Smith, R.L., and Szumigala, D.J., 2006, Bedrock geologic map of the Liberty Bell area, Fairbanks A-4 Quadrangle, Bonnifield mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2006-2 v. 1.0.1, 98 p., 1 sheet, scale 1:50,000.

Reported Activity

Modern Eruptions

1 Event Date(s)

Past Activity Legend:
Eruption
Questionable eruption
Non-eruptive activity


Showing 1 - 6 of 6

Map Images

Map References

Bedrock geologic map of the Liberty Bell area, Fairbanks A-4 Quadrangle, Bonnifield mining district, Alaska, 2006

Athey, J.E., Newberry, R.J., Werdon, M.B., Freeman, L.K., Smith, R.L., and Szumigala, D.J., 2006, Bedrock geologic map of the Liberty Bell area, Fairbanks A-4 Quadrangle, Bonnifield mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2006-2 v. 1.0.1, 98 p., 1 sheet, scale 1:50,000.

References

The crustal magmatic structure beneath the Denali Volcanic Gap imaged by a dense linear seismic array, 2023

Rabade, S., Lin, F.-C., Tape, C., Ward, K.M., Waldien, T., and Allam, A., 2023, The crustal magmatic structure beneath the Denali Volcanic Gap imaged by a dense linear seismic array: Journal of Geophysical Research: Solid Earth v. 128, no. 12, e2023JB027152. https://doi.org/10.1029/2023JB027152

Geologic database of information on volcanoes in Alaska (GeoDIVA), 2022

Cameron, C.E., Crass, S.W., and AVO Staff, eds, 2022, Geologic database of information on volcanoes in Alaska (GeoDIVA): Alaska Division of Geologic and Geophysical Surveys Digital Data Series 20, https://doi.org/10.14509/geodiva, https://doi.org/10.14509/30901.

Segmentation of the Aleutian-Alaska subduction zone revealed by full-wave ambient noise tomography: implications for the along-strike variation of volcanism, 2020

Yang Xiaotao, and Gao Haiying, 2020, Segmentation of the Aleutian-Alaska subduction zone revealed by full-wave ambient noise tomography: implications for the along-strike variation of volcanism: Journal of Geophysical Research: Solid Earth, v. 125, no. 11, p. 25. doi.org/10.1029/2020JB019677.

Alaska Volcano Observatory image database, 2016

Cameron, C.E., and Snedigar, S.F., 2016, Alaska Volcano Observatory image database: Alaska Division of Geological & Geophysical Surveys Digital Data Series 13, https://www.avo.alaska.edu/images/. https://doi.org/10.14509/29689.

Jumbo Dome, Interior Alaska: Whole-rock, major- and trace-element analyses, 2015

Cameron, C.E., Nye, C.J., Bull, K.F., and Woods, Rebecca-Ellen, 2015, Jumbo Dome, Interior Alaska: Whole-rock, major- and trace-element analyses: Alaska Division of Geological & Geophysical Surveys Raw Data File 2015-14, 3 p. doi:10.14509/29520

Preliminary database of Quaternary vents in Alaska, 2014

Cameron, C.E., and Nye, C.J., 2014, Preliminary database of Quaternary vents in Alaska: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 153, 11 p., doi:10.14509/27357 .

Bedrock geologic map of the Liberty Bell area, Fairbanks A-4 Quadrangle, Bonnifield mining district, Alaska, 2006

Athey, J.E., Newberry, R.J., Werdon, M.B., Freeman, L.K., Smith, R.L., and Szumigala, D.J., 2006, Bedrock geologic map of the Liberty Bell area, Fairbanks A-4 Quadrangle, Bonnifield mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2006-2 v. 1.0.1, 98 p., 1 sheet, scale 1:50,000.

The geology of three extrusive bodies in the Central Alaska Range, 1980

Albanese, Mary, 1980, The geology of three extrusive bodies in the Central Alaska Range: University of Alaska Fairbanks unpublished M.S. thesis, 104 p.
Hard Copy held by AVO at FBKS - CEC shelf

Geologic map of the Healy D-4 quadrangle, Alaska, 1970

Wahrhaftig, C., 1970, Geologic map of the Healy D-4 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-806, 1 sheet.

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