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Espenberg description and information


Type:Maars and basalt field
Most Recent Activity:-15550
Seismically Monitored: No
Elevation: 797 ft (243 m)
Latitude: 66.3493° N
Longitude:164.333° W
CAVW Number:314806
Pronunciation: Sound file
Associated Features:Devil Mountain Lakes
South Killeak
White Fish Lake
Devil Mtn
Nearby towns:Deering 49 mi (79 km) SE
Shishmaref 49 mi (78 km) SW
Kotzebue 61 mi (98 km) NE
Northwest Arctic Borough 61 mi (99 km) NE
Anchorage 563 mi (906 km) SE
From Wood and Kienle (1990) [1]: "These are among the northernmost volcanoes in North America, being just south of the Arctic Circle. The basalt field contains 5 maars and 5 small shield-shaped volcanoes. The shields are of Pleistocene age and form tundra-covered hills as tall as 240 m. The maars are younger than the shields and range in age from >0.12 Ma to ~7,000 yr. The maars are 2 to 5 km in diameter and are filled by lakes with surfaces 60 to 80 m below surrounding topography and as much as 30 m deep. Tholeiitic and alkalic basalt of the maars contains up to several tens of percent xenoliths of basement metamorphic and sedimentary rocks as well as masses of unconsolidated Quaternary sediments which must have been frozen at the time of eruption."
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.

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