DEFINITION OF BADLANDS

Definition of badlands An erosional landform that develops in arid to

semiarid terranes, characterized by a very high drainage density

(77 to 747 miles per square mile), steep slopes, and narrow

ridges separating individual stream segments. They may have

steep pinnacles, walls, and heavily gullied slopes leading into

valleys that branch and bend forming a complex, patternless

land surface. Badlands develop on poorly consolidated soils

such as clay, silt, and, in some examples, water-soluble minerals

including gypsum and anhydrite. The development of badlands

is aided by poor drainage, a lack of vegetation, or loss

of vegetation on the unconsolidated surface soils. The French

fur traders (who called it the mauvaises terres) first used the

term for an area in western South Dakota, part of which is

now Badlands National Park. The complex land with many

valleys and difficult access offered hideouts for bandits during

the United States expansion in the west.

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