University of Idaho College of Agricultural and Life Sciences Plant, Soil & Entomological Sciences Soil & Land Resources
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Vertisols

(SSSA Marbut Memorial Slide Set)
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 example 9

gilgai relief on Vertisol landscape
South Dakota

This photo shows "gilgai" micro-topography, commonly associated with Vertisols. Knolls and depressions develop as a results of repeated soil expansion and contraction due to the high percentage of shrink-swell clays.

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  Examples:
1. Typic Hapludert
Texas
2. Udic Haplustert
Puerto Rico
3. Udic Haplustert
southcentral Texas
4. Epiaquert landscape
southern Idaho
5. Xeric Epiaquert
southern Idaho
6. surface cracks in Vertisol
Utah
7. Vertisol slickensides
8. cracked wall on Vertisol
9. gilgai relief
South Dakota
If you have any comments, suggestions, or questions about the 12 Soil Orders web site,
please contact Dr. Paul McDaniel  at the Soil Science Division,
University of Idaho, Moscow, ID 83844-2339.