Geology

Geology

Source: Frank Kovalchek, CC 2.0

Oregon’s spectacular geologic landscape results from millions of years of volcanic eruptions, earthquakes, and fire and floods.

Articles & Stories

Earthquakes and Volcanoes
Earthquakes An earthquake is defined as the "perceptible trembling to violent...
Willamette Basin Geology and Geography
Do not let the bucolic appearance of the Willamette Basin lull you into the feeling that this...

Maps and Tools

Data Collections

Oregon Department of Administrative Services Geospatial Enterprise Office (DAS-GEO)

The Department of Administrative Services (DAS) is the central administrative agency of state... more

More data collections

Animals and Plants

randomness