Peat is the first step in the formation of coal, and slowly becomes lignite after pressure and temperature increase as sediment is piled on top of the partially decaying organic matter. In order to be turned into coal, the peat must be buried from 4-10 km deep by sediment.

Does peat eventually turn into coal?

Peat is not coal, but can eventually transform into coal under the right circumstances. ... Peat is an important source of energy in many countries, including Ireland, Scotland, and Finland, where it is dehydrated and burned for heat. Lignite. Lignite coal is the lowest rank of coal.

Is peat a coal?

The precursor to coal is peat. Peat is a soft, organic material consisting of partly decayed plant and mineral matter. When peat is placed under high pressure and heat, it undergoes physical and chemical changes (coalification) to become coal.