The columbia plateau exposes dark rock that spans the states of washington, oregon, and idaho. what made this vast plateau?
layers of sedimentary rock that deposited, like the grand canyon
layers of continuous basaltic lava flow that cooled and hardened
layers of metamorphic rock that eroded and extruded from deep in the earth's crust
layers of batholith that eroded and became exposed
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The columbia plateau exposes dark rock that spans the states of washington, oregon, and idaho. what...
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