Alluvial Fan: A fan-shaped deposit of sediment formed when a stream's slope is abruptly reduced.
Playa: The flat central area of an undrained desert basin.
Horst: An elongate, uplifted block of crust bounded by faults.Graben: A valley formed by the downward displacement of a fault-bounded block.
Mesa: An elevated area of land with a flat top and sides that are usually steep cliffs.
Butte: Similar to a mesa, but with steeper sides.
Pinnacle
Star Dune: An isolated hill of sand that exhibits a complex star-like form and develops where wind directions are variable
Barchan Dune: A solitary sand dune shaped like a crecent with its tips pointing downwind.
Transverse Dune: A series of long ridges oriented at right angles to the prevailing wind; these dunes form where vegetation is sparse and sand is very plentiful.
Mesa: An elevated area of land with a flat top and sides that are usually steep cliffs.
Butte: Similar to a mesa, but with steeper sides.
Pinnacle
Star Dune: An isolated hill of sand that exhibits a complex star-like form and develops where wind directions are variable
Barchan Dune: A solitary sand dune shaped like a crecent with its tips pointing downwind.
Transverse Dune: A series of long ridges oriented at right angles to the prevailing wind; these dunes form where vegetation is sparse and sand is very plentiful.
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