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Badlands are a type of dry terrain where softer sedimentary rocks and clay-rich soils have been extensively eroded. [1] They are characterized by steep slopes, minimal vegetation, lack of a substantial regolith, and high drainage density. [2] Ravines, gullies, buttes, hoodoos and other such geologic forms are common in badlands.
The Bisti/De-Na-Zin Wilderness is a 45,000-acre (18,000 ha) wilderness area located in San Juan County in the U.S. state of New Mexico. Established in 1984, the Wilderness is a desolate area of steeply eroded badlands managed by the Bureau of Land Management, except three parcels of private Navajo land within its boundaries. [1]
Badlands in the northern portion of Pine Ridge Indian Reservation Badlands in 1939 (45 miles southeast of Rapid City) As part of the World War II effort, the U.S. Army Air Force (USAAF) took possession of 341,726 acres (533.9 sq mi; 1,382.9 km 2 ) of land on the Pine Ridge Indian Reservation , home of the Oglala Sioux people, for a gunnery range.
Badlands National Park is located in southwestern South Dakota, east of the Black Hills. It's about 75 miles away from the state's second-most populous city, Rapid City. The nearest major airport ...
Badlands National Park. The geology of South Dakota began to form more than 2.5 billion years ago in the Archean eon of the Precambrian.Igneous crystalline basement rock continued to emplace through the Proterozoic, interspersed with sediments and volcanic materials.
Many of these sediments ended up in the same area as the marine deposits from the inland sea, and both contribute to western South Dakota's present-day geological makeup. [21] In several areas in western South Dakota, tertiary deposits may also be found. [22] These were formed between 66 and 2.5 million years ago from eroded mountains to the west.
The Chinle Formation is an Upper Triassic continental geological formation of fluvial, lacustrine, and palustrine to eolian deposits spread across the U.S. states of Nevada, Utah, northern Arizona, western New Mexico, and western Colorado.
The Oregon Badlands Wilderness is a 29,301-acre (11,858 ha) wilderness area located east of Bend in Deschutes and Crook counties in the U.S. state of Oregon.The wilderness is managed by the Bureau of Land Management as part of the National Landscape Conservation System and was created by the Omnibus Public Land Management Act of 2009, which was signed into law by President Barack Obama on 30 ...