How Is Coal Formed – A Process Spanning Eras | Planète ÉnergiesJul 7, 2015 . Coal was formed more than 300 million years ago. . The different stages of sedimentation turn cellulose, the main component of wood, . The accumulated plant matter buried during the Tertiary Era — less than 65 million.a summary of the steps in the coal forming process and how plants become coal,Coal Formation | Miners Museum – Glace Bay Nova Scotia CanadaThere are four stages in coal formation: peat, lignite, bituminous and anthracite. The stage depends upon the conditions to which the plant remains are subjected.
a summary of the steps in the coal forming process and how plants become coal