High Uintas Wilderness

The High Uintas Wilderness /juːˈɪntəz/ is a wilderness area located in northeastern Utah, United States. The wilderness covers the Uinta Mountains, encompassing parts of Duchesne and Summit counties. Designated as a wilderness in 1984, the area is located within parts of Ashley National Forest and Uinta-Wasatch-Cache National Forest, managed by the U.S. Forest Service. The highest peak in Utah, Kings Peak, lies within the wilderness area along with some of Utah's highest peaks, particularly those over 13,000 feet.

Mirror Lake Highway is closed in the winter, usually opening annually near Memorial Day. Winter access is allowed for snowmobiling, cross-country skiing, and snowshoeing.

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Uinta Mountains

The Uinta Mountains /juːˈɪntə/ are an east-west trending chain of mountains in northeastern Utah extending slightly into southern Wyoming in the United States. As a subrange of the Rocky Mountains, they are unusual for being the highest range in the contiguous United States running east to west, and lie approximately 100 miles (160 km) east of Salt Lake City. The range has peaks ranging from 11,000–13,528 feet (3,353–4,123 m), with the highest point being Kings Peak, also the highest point in Utah. The Mirror Lake Highway crosses the western half of the Uintas on its way to Wyoming.

Geology

The Uinta Mountains are Laramide uplifted metasedimentary rocks deposited in an intracratonic basin in southwest Laurentia during the time of the breakup of the supercontinent Rodinia. The marine and fluvial metasedimentary rocks in the core of the Uinta Mountains are of Neoproterozoic age (between about 700 million and 800 million years old) and consist primarily of quartzite, slate, and shale. These rocks comprise the Uinta Mountain Group, and reach thicknesses of 4 to 7.3 kilometres (13,000 to 24,000 ft). Most of the high peaks are outcrops of the Uinta Mountain Group. Many of the peaks are ringed with bands of cliffs, rising to form broad or flat tops. The mountains are bounded to the north and south by reverse faults that meet below the range, on the north by the North Flank fault and on the south by the Uinta Basin boundary fault.