05-13-21 – Fantasy Canyon


Fantasy Canyon is a Bureau of Land Management-managed area located about 27 miles (43 km) south of Vernal, in Uintah County, Utah. Even though the area is only about 10 acres (40,000 m2) in size, it contains some of the most unusual geologic features in the world. The site was officially documented by early explorer and paleontologist Earl Douglass, who recorded the area by other names such as “The Devil’s Playground” and “Hades Pit.” He published photographs of this area in a 1909 publication called “The Columbian Magazine.”

The rocks of Fantasy Canyon, quartzose sandstones, were deposited during the Eocene Epoch. They date from around 38 to 50 million years ago. During the geologic period, the Uinta Basin was occupied by a large lake called Lake Uinta. The lake extended 120 miles (190 km) west to Heber City, 30 miles (48 km) east to Rangely, Colorado, south to the Book Cliff Divide, north to the Uinta Mountains, and was about a half mile deep.

Fantasy Canyon is along the east shore of what was once Lake Uinta, where the sediments eroded from the surrounding high lands. Sediments were deposited and the once loose sands, silts, and clays were forged into sandstone and shale. Because of different rates of weathering, the more durable sandstone remained while the more easily weathered siltstone and shale washed away, yielding this spectacular scenery. Today’s geologic formations of Fantasy Canyon will eventually give way to weather and then topple and erode into sand, but new formations will appear as the topsoil washes away. Because the delicate formations are so fragile the area is referred to as “Nature’s China Shop.”

Source: Wikipedia
https://en.wikipedia.org/wiki/Fantasy_Canyon

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