O A E B C or Bedrock 22 This horizon has a high

Last updated: 4/10/2023

O A E B C or Bedrock 22 This horizon has a high concentration of clay and mineral deposits It is built up over many cycles of the soil 23 The top layer of soil made of living and slightly decomposed organic matter 24 This horizon is the substratum or regolith It is considered the bottom layer of the soil 25 Located just below the top layer and is made up of minerals and decomposed organic matter 26 This horizon is not part of the soil and acts as a foundation layer 27 Found only in forested areas Light in color and primarily sand and silt