By Tom Schmidt
As one travels through northern Arizona, one of the first observations made might be the different types of rocks and physical landscapes. Indeed, the region is a land of geologic diversity, including the Grand Canyon and the red rock formations of Sedona. North of Prescott is the Granite Dells, an area of large boulders of eroded granite, while west of the city is Thumb Butte, a distinctive geological landmark. These awe-inspiring landscapes reflect Earth’s geological history that occurred not just in decades, but throughout millions of years.
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