University of Idaho College of Agricultural and Life Sciences Plant, Soil & Entomological Sciences Soil & Land Resources
Soil Orders
Soil Links
  Gelisols    Histosols    Spodosols    Andisols    Oxisols    Vertisols    Aridisols    Ultisols    Mollisols    Alfisols    Inceptisols    Entisols


Entisols are soils of recent origin. The central concept is soils developed in unconsolidated parent material with usually no genetic horizons except an A horizon. All soils that do not fit into one of the other 11 orders are Entisols. Thus, they are characterized by great diversity, both in environmental setting and land use.

Many Entisols are found in steep, rocky settings. However, Entisols of large river valleys and associated shore deposits provide cropland and habitat for millions of people worldwide.

Globally Entisols are the most extensive of the soil orders, occupying ~18% of the Earth's ice-free land area. In the US, Entisols occupy ~12.3% of the land area.

Enttisols are divided into 6 suborders: Wassents, Aquents, Arents, Psamments, Fluvents, and Orthents. Click here for more information about these suborders. Click here to view a map of their distribution in the US.

Click on map to view larger image

Click on map to view larger image
<< back to Soil Orders list Entisol example #1 >> 
1. Udifluvent landscape
east-central Louisiana
2. Typic Udifluvent SW Wisconsin
3. Xerorthent landscape
northern Idaho
4. Lithic Xerorthent
northern Idaho
5. Torripsamment landscape
southern Idaho
6. Xeric Torripsamment
southern Idaho
7. Udipsamment landscape
northern Michigan
8. Typic Udipsamment
northern Michigan
9. Torriorthent landscape
southern Idaho
10. Typic Torriorthent
southern Idaho
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.