AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
About Alaska's Volcanoes | Hazards from Alaska's Volcanoes | Map & Alphabetical List | Interactive Map | Eruption Search | Volcano Search | veniaminof 
You are here: Home > Volcano Information > veniaminof

Mount Veniaminof description and information



Official Name: Mount Veniaminof
Type:Stratovolcano with a summit caldera
Most Recent Activity:February 28, 2021
Seismically Monitored: Yes
Color Code:GREEN
Alert Level:NORMAL
Elevation: 8225 ft (2507 m)
Latitude: 56.1979° N
Longitude:159.3931° W
CAVW Number:312070
Pronunciation: Sound file
Nearby towns:Ivanof Bay 20 mi (32 km) SW
Perryville 22 mi (35 km) SE
Chignik Lake 25 mi (40 km) NE
Chignik Lagoon 34 mi (55 km) NE
Anchorage 485 mi (781 km) NE
From Miller and others (1998) [1]: "Mount Veniaminof is a broad central mountain, 35 km wide at the base, truncated by a spectacular steep-walled summit caldera 8x11 km in diameter. The caldera is filled by an ice field that ranges in elevation from approximately 1750 to 2000 m; ice obscures the south rim of the caldera and covers 220 square km of the south flank of the volcano. Alpine glaciers descend from the caldera through gaps on the west and north sides of the rim and other alpine glaciers occupy valleys on the north-, east-, and west-facing slopes of the mountain. In the western part of the caldera, an active intracaldera cone with a small summit crater has an elevation of 2156 m, approximately 330 m above the surrounding ice field. The rim of a larger but more subdued intracaldera cone protrudes just above the ice surface in the northern part of the caldera; based on limited exposure and physiographic features, it may have a summit crater as much as 2.5 km in diameter.

"Andesitic and dacitic ash-flow tuffs from the caldera-forming eruption occur in many of the valleys on the north slope of the volcano and are found as far away as 50 km from the caldera rim on both the Bering Sea and Pacific Ocean coasts.

"A northwest-trending belt of post-caldera cinder and scoria cones, including the two intracaldera cones, extends from near the Bering Sea coast approximately 55 km across the main volcanic edifice and the Aleutian Range divide, well down the Pacific slope [2]."

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 Chignik and Sutwik Island quadrangles, Alaska, 1981
Detterman, R. L., Miller, T. P., Yount, M. E., and Wilson, F. H., 1981, Geologic map of the Chignik and Sutwik Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 1229, unpaged, 1 sheet, scale 1:250,000.

Contact AVO Privacy Accessibility Information Quality FOIA
URL: www.avo.alaska.edu/volcanoes/volcinfo.php
Page modified: September 29, 2020 12:19
Contact Information: AVO Web Team

twitter @alaska_avo
facebook alaska.avo
email Receive volcano updates by email: USGS VNS

This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137

Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.