bajada | A broad, gently sloping, depositional surface formed at the base of a mountain range in a dry region by the coalescing of individual alluvial fans.
(See page(s) 461)
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barchan | A crescent-shaped dune with the horns of the crescent pointing downwind.
(See page(s) 470)
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blowout | A depression on the land surface caused by wind erosion.
(See page(s) 463)
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butte | A narrow pinnacle of resistant rock with a flat top and very steep sides.
(See page(s) 458)
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deflation | The removal of clay, silt, and sand particles from the land surface by wind.
(See page(s) 463)
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desert | A region with low precipitation (usually defined as less than 25 cm per year).
(See page(s) 453)
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fault | A fracture in bedrock along which movement has taken place.
(See page(s) 460)
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flash flood | Flood of very high discharge and short duration; sudden and local in extent.
(See page(s) 457)
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loess | A fine-grained deposit of wind-blown dust.
(See page(s) 464)
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longitudinal dune (seif) | Large, symmetrical ridge of sand parallel to the wind direction.
(See page(s) 470)
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mesa | A broad, flat-topped hill bounded by cliffs and capped with a resistant rock layer.
(See page(s) 458)
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parabolic dune | A deeply curved dune in a region of abundant sand. The horns point upwind and are often anchored by vegetation.
(See page(s) 470)
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pediment | A gently sloping erosional surface cut into the solid rock of a mountain range in a dry region; usually covered with a thin veneer of gravel.
(See page(s) 461)
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plateau | Broad, flat-topped area elevated above the surrounding land and bounded, at least in part, by cliffs.
(See page(s) 458)
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playa | A very flat surface underlain by hard, mud-cracked clay.
(See page(s) 460)
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playa lake | A shallow temporary lake (following a rainstorm) on a flat valley floor in a dry region.
(See page(s) 460)
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rain shadow | A region on the downwind side of mountains that has little or no rain because of the loss of moisture on the upwind side of the mountains.
(See page(s) 454)
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sand dune | A mound of loose sand grains heaped up by the wind.
(See page(s) 466)
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slip face | The steep, downwind slope of a dune; formed from loose, cascading sand that generally keeps the slope at the angle of repose (about 34°).
(See page(s) 466)
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transverse dune | A relatively straight, elongate dune oriented perpendicular to the wind.
(See page(s) 470)
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ventifact | Boulder, cobble, or pebble with flat surfaces caused by the abrasion of wind-blown sand.
(See page(s) 463)
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