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Geologic sightseeing

Learn more about Oregon's geology

coastal hwy

Sand dunes at Honeyman State Park in the Oregon Dunes National Recreation Area
Sand dunes that have formed since the end of the Ice Age occupy approximately 140 of Oregon’s 310 miles of coast - more than in Washington or California.

map legendcoastal rangeCascade MountainsBasin & Range & Owyhee UplandsHigh Lava PlainsBasin & Range & Owyhee UplandsBlue MountainsWillamette ValleyDeschutes-Columbia plateauKlamath Mountains
Geographic areasDeschutes-Columbia plateauBlue MountainsHigh Lava plainsBasin & Range & Owyhee uplandsBasin & Range & Owyhee uplandsCascade RangeCoast RangeWillamette Valley

Graphic by Elizabeth L. Orr, Geology of Oregon

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Oregon Department of Geology and Mineral Industries
800 NE Oregon Street, Suite 965, Portland, OR 97232-2162
971-673-1555, FAX 971-673-1562
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