Typic Fibrisol (TY.F)

Common horizon sequence: Of or Om, Of

Soils of this subgroup have the general properties specified for the Organic order and the Fibrisol great group. They are composed mainly of fibric material that is commonly derived mainly from mosses.

These soils are identified by the following properties:

1. If present, the middle and bottom tiers are dominantly fibric. A lithic contact may occur.
2. They have neither subdominant humic layers with a total thickness of greater than 12 cm or subdominant mesic layers with a total thickness greater than 25 cm in the middle and bottom tier, or in the middle and surface tiers if a lithic contact occurs in the middle tier.
3. The middle tier lacks terric, hydric, cumulic, and limnic layers.

Note: Diagnostic horizons are underlined.

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