Quiz: How did the Grand Canyon form over millions of years? January 26, 2025 by Orin Thorne How did the Grand Canyon form over millions of years? Discover more about Grand Canyon Tours at our home page. A) Through the erosion caused by the Colorado River cutting through rock layers. B) By volcanic activity that created large craters and depressions. C) As a result of tectonic plate movements that uplifted the region. D) From glacial activity that carved out the canyon during the Ice Age. Submit Answer
