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Table Top Mountain description and information


Official Name: Table Top Mountain
Type:Pyroclastic cone
Most Recent Activity:-66050
Seismically Monitored: No
Elevation: 2598 ft (792 m)
Latitude: 53.9671° N
Longitude:166.679° W
CAVW Number:
Pronunciation: Sound file
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
Anchorage 794 mi (1278 km) NE
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."
Catalog of the historically active volcanoes of Alaska, 1998
citation imageMiller, 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.
Download PDF title page PDF : 52
Download PDF intro and TOC PDF : 268 KB
Download PDF eastern part - Wrangell to Ukinrek Maars PDF : 972 KB
Download PDF central part - Chiginagak to Cleveland PDF : 2,463 KB
Download PDF western part - Carlisle to Kiska PDF : 956 KB
Download PDF references PDF : 43 KB

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.
Download website with links to map sheets and report in PDF format

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