For most of us, our first exposure to geology in school was the study of the Grand Canyon. Awed by its immense size and varying nature, it seemed improbable that a mere river could cut such a wide, and deep swath through the earth, even with millions of years to get the task completed. At close to 300 miles long, up to 18 miles across, and a mile deep, the Grand Canyon inspires awe, with about 5 million visitors going to see this wonder each year. Even though new evidence suggests part of the canyon formed millions of years before the Colorado River existed, the power of water, and erosion are on display at this American landmark.… Read More
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