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Eemian erosion surface in a fossil coral reef on Great Inagua, The Bahamas. Foreground shows corals truncated by erosion; behind the geologist is a post-erosion coral pillar which grew on the surface after sea level rose again.

In geology and geomorphology, an erosion surface is a surface of rock or regolith that was formed by erosion[1] and not by construction (e.g. lava flows, sediment deposition[1]) nor fault displacement. Erosional surfaces within the stratigraphic record are known as unconformities, but not all unconformities are buried erosion surfaces. Erosion surfaces various in scale: it can be formed on a mountain range or a rock.[2] Particularly large and flat erosion surfaces receive the names of peneplain, paleoplain, planation surface or pediplain.


  1. ^ a b Lidmar-Bergström, Karna. "erosionsyta". Nationalencyclopedin (in Swedish). Cydonia Development. Retrieved June 22, 2015.
  2. ^ Toy, Terrence J.; Foster, George R.; Renard, Kenneth G. (2002). Soil erosion : processes, prediction, measurement, and control. New York: John Wiley & Sons. ISBN 0471383694. OCLC 48223694.
Rhizolith group produced by wind erosion.