Deschutes & Ochoco National Forests
Crooked River National Grassland

Oregon Volcanoes

Lava Mountain Flows

SUMMARY

Type: shield capped by cinder cones
Activity: extinct
Last Eruption: less than 40,000 years ago
Rock Type: basalt
Eruptive Volume: ?
Latitude: 43.46 N
Longitude: 120.75 W
Location Maps: from TIGER Mapping Service

• State Level - shows state and communities
• County Level - shows county lines, highways, and communities
• Local Level - shows above plus lakes and local roads

Topo Map from TopoZone

Lava Mountain Photo Menu

GEOLOGIC BACKGROUND:

Lava Mountain is a large basalt shield capped by multiple cinder cones. This broad, shallow cone covers an area 10 to 11 km in diameter east of the Devils Garden lava field. The lava field contains both rough, clinkery aa lava and smooth ropy pahoehoe lava.

HISTORIC ACTIVITY:

• None

DATA SOURCE:

• Jensen, 1995.
  

ADDITIONAL INFORMATION