PEAT — an organic fuel formed by the partial decomposition of organic matter, primarily plant material in wetlands. This is a sedimentary loose rock, which is used as a combustible mineral. Formed by the accumulation of residues of mosses that underwent incomplete decomposition in wetland.
The bog is characterized by deposition partially decayed organic matter on the soil surface, which later turns into peat. Used as a fuel, fertilizer, combustible material, as it contains up to 60% carbon; as a fertilizer and as a thermal insulation material in construction.