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3 years ago

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The Columbia Plateau in Washington and Oregon is ________. a. a caldera filled with rhyolite lava flow.b. a thick stack of welde

d-tuff layers c. a flood basalt plateaud. a field of large stratovolcanoes

1 answer:

Aleks04 [339]3 years ago

4 0

Answer:

b. a thick stack of welded-tuff layers

Explanation:

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