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Where is the Columbia River Basalt Group found?
Quick Answer
The Columbia River Basalt Group is in the northwestern United States, mainly Washington, Oregon, and Idaho. It formed from huge lava flows in the Miocene epoch.
The Full Story
The Columbia River Basalt Group covers large parts of Washington, Oregon, and Idaho. These basalts were erupted repeatedly about 17 to 6 million years ago, creating one of the largest flood basalt provinces on Earth. The lava spread over a vast area, shaping plateaus, gorges, and dramatic cliffs in the Pacific Northwest. Geologists study it to understand massive volcanic outpourings and their effects on landscapes and climate.
Key Facts
1.Mostly in Washington, Oregon, and Idaho
2.Eruptions occurred about 17–6 million years ago
3.One of Earth’s largest flood basalt provinces
YouTube Angle
Suggested video title for this topic:
"A region of the American Northwest was built by lava floods."
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