Davis Lake Volcanic Field

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Three small, youthful lava flows, each with an associated scoria cone, lie about 15 km (9 mi) east of the Cascade Range crest in central Oregon.

Quick Facts

Location: Oregon, Deschutes County

Latitude: 43.641° N

Longitude: 121.818° W

Elevation: 1,494 (m) 4,902 (f)

Volcano type: Lava flows

Composition: Andesite

Most recent eruption: 5,300-5,600 years ago

Nearby towns: Gilchrist, La Pine

Threat Potential: Low/Very Low*

_{*based on the National Volcano Early Warning System}

Summary

The northernmost of the three forms the natural dam to Davis Lake, the namesake for this volcanic field. The lava flows, are thick (30-60 m or 90-200 ft), blocky andesite. The vents form a 20-km-long (12 mi) north-trending alignment. The Davis Lake lava flows are similar in appearance and chemistry, which indicates that they are probably the surface expression of a single fissure at depth and were probably erupted at, or very near, the same time.

The Davis Lake lava flows are younger than Mount Mazama (Crater Lake) ash and therefore younger than about 7,700 years. A more precise age comes from charcoal collected beneath the cinder fallout near the vent for the middle lava flow, which indicates the flows are approximately 5,050-5,600 years old (calibrated to calendar years).

Publications

October 22, 2018

2018 update to the U.S. Geological Survey national volcanic threat assessment

When erupting, all volcanoes pose a degree of risk to people and infrastructure, however, the risks are not equivalent from one volcano to another because of differences in eruptive style and geographic location. Assessing the relative threats posed by U.S. volcanoes identifies which volcanoes warrant the greatest risk-mitigation efforts by the U.S. Geological Survey and its partners...

Authors

John W. Ewert, Angie Diefenbach, David W. Ramsey

Volcano Hazards Program, Volcano Science Center, Agrigan, Ahyi Seamount, Alamagan, Anatahan, Asuncion, Belknap, Black Butte Crater Lava Field, Black Rock Desert Volcanic Field, Blue Lake Crater, Carrizozo Lava Flow, Cascade Range Weekly Update, Cinnamon Butte, Clear Lake Volcanic Field, Coso Volcanic Field, Crater Lake, Craters of the Moon Volcanic Field, Daikoku Seamount , Davis Lake Volcanic Field, Devils Garden Lava Field, Diamond Craters Volcanic Field, Dotsero Volcanic Center, East Diamante, Esmeralda Bank, Farallon de Pajaros, Fukujin Seamount , Glacier Peak, Guguan, Haleakalā, Hell's Half Acre Lava Field, Hualālai, Indian Heaven Volcanic Field, Jordan Craters Volcanic Field, Kama‘ehuakanaloa, Kasuga 2, Kīlauea, Lassen Volcanic Center, Long Valley Caldera, Mammoth Mountain, Markagunt Plateau Volcanic Field, Maug Islands, Mauna Kea, Mauna Loa, Medicine Lake, Mono Lake Volcanic Field, Mono-Inyo Craters, Mount Adams, Mount Bachelor, Mount Baker, Mount Hood, Mount Jefferson, Mount Rainier, Mount Shasta, Mount St. Helens, Newberry, Ofu-Olosega, Pagan, Red Hill-Quemado Volcanic Field, Ruby, Salton Buttes, San Francisco Volcanic Field, Sand Mountain Volcanic Field, Sarigan, Soda Lakes, South Sarigan Seamount, Supply Reef, Ta'u Island, Three Sisters, Tutuila Island, Ubehebe Craters, Uinkaret Volcanic Field, Valles Caldera, Wapi Lava Field, Weekly Update, West Crater Volcanic Field, Yellowstone, Zealandia Bank, Zuni-Bandera Volcanic Field

Davis Lake Volcanic Field

Quick Facts

Summary

Publications

2018 update to the U.S. Geological Survey national volcanic threat assessment

Quick Facts

Volcanoes Hazards Program Links

U.S. Geological Survey

U.S. Department of the Interior