1. Entisols Ent ~ Recent

5. Characteristics Soils of recent development Highly resistant parent materials The exposed land surface is young, due to erosion Typical Profile: A, C, or A, Bw, C (Bw is not cambic due to being too sandy)

6. Typical Environments Found in largely diverse land settings Steep rocky settings Large river valleys Most extensive of the soil orders 18% of Earth’s ice free land area 12.3% of U.S. land area

10. Inceptisols Inceptum ~ Beginning

14. Characteristics Immature soils, but show more development than Entisols Altered horizons, but not weathered enough to become illuvial horizons Supports about 20% of the world’s pop.

15. Characteristics cont. Diagnostic features: ochric, epipedon, and cambic horizon. Typical sequence: A, Bw, C. 15% of Earth’s ice free land area 9.7% U.S. land area

16. Typical Environment Widely distributed across a wide range of ecological settings Steep slopes, young geomorphic surfaces, on resistant parent materials Excluded from areas with permafrost Not found in arid regions.