 Ferro-Humic Podzols have a dark reddish-brown or black B horizon containing at least 5% organic carbon and appreciable amounts (often 2% or more) of aluminum and iron in organic complexes.They occur commonly in the more humid parts of the area of Podzolic soils; e.g., coastal British Columbia and parts of Newfoundland and southern Quebec.In Labrador along the Churchill River valley Ferro-Humic Podzols comprise about 36% of soils.