Deschutes & Ochoco National Forests
Crooked River National Grassland

Oregon Volcanoes

Sand Rock Volcano

SUMMARY

Type: tuff ring
Activity: extinct
Last Eruption: 50,000 to 100,000 years ago
Rock Type: basalt
Eruptive Volume: ?
Latitude: 43.37 N
Longitude: 120.32 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

Sand Rock Photo Menu

GEOLOGIC BACKGROUND:

One of the many marr volcanoes of the Fort Rock Basin.

HISTORIC ACTIVITY:

• None

DATA SOURCE:

• None
  

ADDITIONAL INFORMATION