playa step

playa step
   (colloquial: Southern High Plains)
   The relatively level or gently inclined “terrace-like” bench or toeslope within a large playa basin flanking and topographically higher than the playa floor and below the playa slope; a bench or step-like surface within a playa basin that breaks the continuity of the playa slope and modified by erosion and/or deposition. Temporary ponding may occur in response to precipitation / runoff events.
   Compare: playa slope.
   SW

Glossary of landform and geologic terms. 2013.

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  • playa slope —    (colloquial: Southern High Plains)    The generally concave to slightly convex area within a playa basin that lies between the relatively level playa floor below (or playa step, if present) and the convex playa rim above. Overland flow is… …   Glossary of landform and geologic terms

  • playa floor —    (colloquial: Southern High Plains)    The lowest extensive, flat to slightly concave surface within a playa basin, consisting of a dry lake bed or lake plain underlain by stratified clay, silt or sand, and commonly by soluble salts.    Compare …   Glossary of landform and geologic terms

  • sabkha —    A flat area of eolian sedimentation and erosion formed under semiarid or arid conditions in: 1) interior areas (e.g. on basin floors slightly above playa lake beds (e.g., playa step), or: 2) along coastal areas (e.g., just above intertidal… …   Glossary of landform and geologic terms

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