2b. Peat Formation & Coalification Process

Peat and the Peatification Process


Peat is partially decayed plant material that forms in wetlands. For peat to form, plant debris must accumulate faster than bacteria can break it down. The partial decomposition of plant material in swampy, waterlogged environments is called peatification. Peat is used for heating as a firewood alternative. It forms a suitable fuel for boiler firing when it is briquetted or pulverized. Peat is also used for household cooking or even to produce small amounts of electricity.

When peat is buried, heat and pressure transform the peat into coal over time. First, peat becomes lignite,then lignite forms sub-bituminous, sub-bituminous coal becomes bituminous coal, and lastly, bituminous coal becomes anthracite.