Gley soil profile

• This is what a gley soil profile looks like: 4 layers and a layer of permafrost (lower B Horizon)

  
• Ao Horizon: Vegetation is shrubs, slow decomposing leaf litter, acidic (mor) humus, precipitation > evaporation, gentle relief hinders drainage
• A Horizon: Dark brown/grey colour, build up of organic material/peat, anaerobic conditions and little soil Biota so distinct layers
• B Horizon: Waterlogged, blue/grey colour, rock fragments
• Lower B Horizon: Permafrost impedes drainage
• C Horizon: Impermeable parent material (clay), has clay texture