Terric Humic Fibrisol (THU.F)
Common horizon sequence: Of or Om, Of, Oh, C
Soils of this subgroup have the general properties specified for the Organic order and the Fibrisol great group. They differ from Typic Fibrisols by having both a terric layer beneath the surface tier and a subdominant humic layer thicker than 12 cm in the control section. They may also have mesic, cumulic, or limnic layers but lack a hydric layer.
Note: Diagnostic horizons are underlined.