Sedona takes its name from Theodore Carlton Schnebly's wife, Sedona Miller Schnebly. In 1902 when he applied for a name for the Post Office he formed, Sedona was approved. The rock formations at Sedona were formed over millions of years with sedimentary layers of sandstone. Dinosaurs roamed the land between 200 and 65 million years ago and between 20 to 12 million years ago, volcanic activity caused the Verde Valley to down fault into a deep basin with lakebeds, creating the Mogollon Rim. About 3 million years ago, the Colorado Plateau uplifted. Since then, erosion by wind, rain and snowmelt has created Oak Creek Canyon and exposed the layers of sediment (Schnebly Hill Formation sandstone) to form the spectacular red rock formations we now see in Sedona.
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