Skookum Creek


Facts


  • Official Name:
  • Seismically Monitored: No
  • Color Code: UNASSIGNED
  • Alert Level: UNASSIGNED
  • Elevation: 2172m (7125ft)
  • Latitude: 62.3996
  • Longitude: -143.1371
  • Smithsonian VNum:
  • Nearby Towns:
    • Slana 34 mi (54 km) NW
    • Chisana 42 mi (68 km) SE
    • Mentasta Lake 42 mi (68 km) NW
    • Chistochina 50 mi (81 km) NW
    • Northway 54 mi (87 km) NE

Description

From Miller and Richter (1994) [1] : "The Skookum Creek eruptive center is an erosionally dissected complex that may, in part, be as young as Quaternary. It consists principally of a series of rhyolite, rhyodacite, and andesite domes and their associated pyroclastic deposits, with an age of about 3.7 Ma, and an extensive sequence of relatively flat-lying andesite flows, some of which have been dated at 2.8 Ma [2] . Both the domes and the flows are intruded by a few rhyodacite and andesitic dikes that appear to originate from a rhyodacite dome near the center of the complex. Relations between the volcanic units of the complex suggest that the flat-lying flows fill a caldera that is defined by the crude arcuate alignment of the domes."

Name Origin

"Skookum Creek eruptive center" is an informal name, after the nearby Skookum Creek. "Skookum" is a Chinook jargon word meaning "strong, brave, bold, or best."


References Cited

[1] Quaternary volcanism in the Alaska Peninsula and Wrangell Mountains, Alaska, 1994

Miller, T. P., and Richter, D. H., 1994, Quaternary volcanism in the Alaska Peninsula and Wrangell Mountains, Alaska: in Plafker, George, Jones, D. L., and Berg, H. C., (eds.), The Geology of Alaska, Geological Society of America The Geology of North America series v. G-1, p. 759-779.

[2] Geologic map of the Nabesna B-5 Quadrangle, Alaska, 1982

Lowe, P.C., Richter, D.H., Smith, R.L., and Schmoll, H.R., 1982, Geologic map of the Nabesna B-5 Quadrangle, Alaska: US Geological Survey Geologic Quadrangle Maps 1566, 1 sheet, scale 1:63,360, available at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=13055 .

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