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Landforms and Associated Surficial Materials of Yellowstone National Park |
 | | Within applied geomorphology, a landform is defined as "any physical, recognizable form or feature of the Earths surface having a characteristic shape, and produced by natural causes; it includes major forms such as a plain, plateau, or mountain, and minor forms such as a hill, valley, slope, esker, or dune. |
 | | Most landforms are differentiated on maximum or minimum relief, but a few may not have any relief, and some have minimum relief because of mapping limitations (e.g., 120 ft (37 m) for stream breaks or breaklands). |
 | | Landforms in this subgroup are differentiated by presence of outwash channels, loess-covered or lobate ridges, talus slopes, bedrock exposure, or degree of stream dissection. |
| www.giac.montana.edu /gyadc/metadata/ynplandf.html (11230 words) |
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