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Espenberg description and information

ESPENBERG LINKS

SAMPLES
LOCATION
FACTS
Type:Maars and basalt field
Most Recent Activity:
Seismically Monitored: No
Elevation: 797 ft (243 m)
Latitude: 66.3493° N
Longitude:164.333° W
Quadrangle:Kotzebue
CAVW Number:314010
Pronunciation: Sound file
Associated Features:Devil Mountain Lakes
South Killeak
White Fish Lake
Devil Mtn
Nearby towns:Shishmaref 48 mi (78 km) SW
Deering 49 mi (79 km) SE
Kotzebue 61 mi (98 km) NE
Northwest Arctic Borough 61 mi (98 km) NE
Anchorage 563 mi (906 km) SE
DESCRIPTION
From Wood and Kienle (1990): "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."
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Page modified: June 12, 2014 07:20
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