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Mount Toll is set on the Continental Divide in the Front Range which is a subrange of the Rocky Mountains. [4] The mountain is located 21 miles (34 km) west-northwest of Boulder in the Indian Peaks Wilderness, on land managed by Arapaho National Forest and Roosevelt National Forest.
Boulder Peak is composed of sedimentary rock laid down during the Precambrian to Jurassic periods. Formed in shallow seas, this sedimentary rock was initially uplifted beginning 170 million years ago when the Lewis Overthrust fault pushed an enormous slab of precambrian rocks 3 mi (4.8 km) thick, 50 miles (80 km) wide and 160 miles (260 km) long over younger rock of the cretaceous period.
It includes 7 peaks over 13,000 feet (4,000 m) in elevation. The highest point is North Arapaho Peak at 13,502 feet (4,115 m). The peaks are all within 100 feet (30 m) of elevation of each other. A portion of the area, encompassing the headwaters of North Boulder Creek, is closed to the public as it is the City of Boulder watershed.
The City of Leadville, Colorado has been the highest elevation incorporated city in the United States since its incorporation on February 18, 1878. The Town of Winter Park, Colorado has the highest elevation within the municipal boundaries of any town in the United States at 12,060 feet (3,676 m).
The Boulder Mountains are a mountain range running roughly north to south located west of Boulder between Helena and Butte in the U.S. state of Montana. [1] Parts of the range are in four different counties: Deer Lodge, Jefferson, Lewis and Clark, and Silver Bow. [1] Haystack Mountain, which reaches 8,819 feet (2,688 m), is the tallest peak in ...
In geology, a boulder (or rarely bowlder) [1] is a rock fragment with size greater than 25.6 cm (10.1 in) in diameter. [2] Smaller pieces are called cobbles and pebbles . While a boulder may be small enough to move or roll manually, others are extremely massive. [ 3 ]
Giant Rock is a large freestanding boulder in the Mojave Desert near Landers, California, and the Marine Corps Air Ground Combat Center Twentynine Palms covering 5,800 square feet (540 m 2) of ground. Giant Rock is the largest freestanding boulder in North America and is purported to be the largest free standing boulder in the world. [1]
The depth of the boulder field depends on the slope angle, rock types, age, and erosional history. However, a reasonable average for felsenmeer depth is approximately 1m. Ballantyne (1998) [ 7 ] defines three types of felsenmeer profiles: Type 1 consists of boulders overlying a matrix of fines at some depth below the surface.