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

Koniuji Island description and information


Official Name: Koniuji Island
Most Recent Activity:
Seismically Monitored: No
Elevation: 892 ft (272 m)
Latitude: 52.22144° N
Longitude:175.13182° W
CAVW Number:311140
Pronunciation: Sound file
Nearby towns:Atka 39 mi (63 km) SE
Shemya Station 55 mi (89 km) NW
Adak 68 mi (109 km) SW
Attu Station 94 mi (151 km) NW
Anchorage 1129 mi (1817 km) NE
From Jicha and Singer (2009): Jicha and Singer were able to spend two days on Koniuji during the summer of 2008, while accompanying the USFWS vessel Tiglax. While on Koniuji, they collected samples for 40Ar/39Ar dating. Koniuji is a nascent stratovolcano, with 40Ar/39Ar ages that indicate subaerial lavas and domes erupted over the last 15,000 years, including at least three eruptions within the last 6000 years. It has an estimated volume of 1 cubic km, with approximately 25% of that volume subaerial. Dated products include older basaltic andesite lavas and younger andesite dome rocks.

Wood and Kienle (1990) [1] note that in 1981, "geologists from the USGS research vessel S.P. Lee landed in a small boat to collect samples. The collected rocks are from andesite flows, and pyroclastic deposits. A northeast-trending fault cuts the island on the southeast. A possible vent occurs just north of the highest point on the island."

Volcanoes of North America: United States and Canada, 1990
Wood, C. A., and Kienle, Juergen, (eds.), 1990, Volcanoes of North America: United States and Canada: New York, Cambridge University Press, 354 p.

Contact AVO Privacy Accessibility Information Quality FOIA
URL: www2.avo.alaska.edu/volcanoes/volcinfo.php
Page modified: June 12, 2014 07:20
Contact Information: AVO Web Team

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