The columbia plateau in washington and oregon is a. a caldera filled with rhyolite lava flow. b. a thick stack of welded-tuff layers c. a flood basalt plateaud. a field of large stratovolcanoes

Hey people my question is what happens if the earth crust was never apart of the earth just got a new account very upset because my other account didn't work no more so and you for everything gracious < 3< 3< 3