Geology and Minerals

Columbia River Basalt Group

The Columbia River Basalt Group (CRBG) is the youngest, smallest and one of the best-preserved continental flood basalt provinces on Earth, covering over 210,000 km2 (81,000 sq mi) mainly eastern Oregon and Washington, western Idaho, and part of northern Nevada. The basalt group includes the Steens and Picture Gorge basalt formations.

Also on this shelf

See also

• ▸Geology of Ghana
• ▸Citadel of Besançon
• ▸Chagrin Shale

Uncatalogued shelf

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