Typic Mesisol (TY.M)

Common horizon sequence: Of, Om or Oh, Om

Soils of this subgroup have the general properties specified for the Organic order and the Mesisol great group. They are composed mainly of organic materials at an intermediate stage of decomposition.

They are identified by the following properties:

1. If present, the middle and bottom tiers are dominantly mesic. A lithic contact may occur.
2. These soils do not have terric, hydric, cumulic, or limnic layers within the middle tier.
3. They lack subdominant humic or fibric layers with a total thickness greater than 25 cm in the middle and bottom tiers or in the middle and surface tiers if a lithic contact occurs in the middle tier.

Note: Diagnostic horizons are underlined.

List all known examples