Question

How is the Grand Canyon related to volcanic activity?

Answer 1

In the western Grand Canyon hundreds of volcanic eruptions occurred over the past two million years. At least a dozen times, lava cascaded down the walls of the Inner Gorge, forming massive lava dams that blocked the flow of the Colorado River.

Step-by-step explanation:

Answer 2

In the western Grand Canyon hundreds of volcanic eruptions occurred over the past two million years. At least a dozen times, lava cascaded down the walls of the Inner Gorge, forming massive lava dams that blocked the flow of the Colorado River. ... 1064 a series of eruptions built the park's namesake cinder cone.

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