Table Top Mtn


Facts


  • Official Name: Table Top Mountain
  • Seismically Monitored: No
  • Color Code: UNASSIGNED
  • Alert Level: UNASSIGNED
  • Elevation: 792m (2598ft)
  • Latitude: 53.9671
  • Longitude: -166.679
  • Smithsonian VNum:
  • Nearby Towns:
    • Unalaska 9 mi (14 km) SE
    • Akutan 39 mi (62 km) NE
    • Nikolski 115 mi (185 km) SW
    • False Pass 145 mi (233 km) NE
    • Pauloff Harbor 164 mi (264 km) NE

Description

From Miller and others (1998) [1] : "Tabletop Mountain, the eroded remains of of a pyroclastic cone encircled by flows originating from small flank vents, is 20 km northeast" of Makushin Volcano. Table Top is considered to be Holocene in age, and to represent a magmatic system separate from that of Makushin (Nye, personal commun., 2007). From McConnell and others (1998) [2] : "An 40Ar/39Ar age of 68+/-14 ka places this unit as the oldest satellite vent. Basaltic lavas and tephra from Table Top Mountain northeast of Makushin Volcano and a small, glaciated ramp of lava north and west of the cone."

Name Origin

"Table Top Mountain" was published in the 1944 Aleutian Coast Pilot (Orth, 1971).


References Cited

[1] Catalog of the historically active volcanoes of Alaska, 1998

Miller, T. P., McGimsey, R. G., Richter, D. H., Riehle, J. R., Nye, C. J., Yount, M. E., and Dumoulin, J. A., 1998, Catalog of the historically active volcanoes of Alaska: U.S. Geological Survey Open-File Report 98-0582, 104 p.

[2] Geologic map of the Makushin volcanic field, Unalaska Island, Alaska, 1998

McConnell, V. S., Beget, J. E., Roach, A. L., Bean, K. W., and Nye, C. J., 1998, Geologic map of the Makushin volcanic field, Unalaska Island, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 97-20, unpaged, 2 sheets, scale 1:63,360.

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