Coal
Combustible sedimentary rock composed primarily of carbon
Coal ▸ Facts ▸ Comments ▸ News ▸ Videos
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.
Coal is a type of fossil fuel, formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands called coal forests that covered much of the Earth's tropical land areas during the late Carboniferous (Pennsylvanian) and Permian times.
2 shares | ShareTweetSavePostSend |
You Might Like
No news matches foundSorry, we were unable to find any results in our database for your queryFree news archive accessDid you know? You are eligible to search our news archive with millions of news references free of charge. To do this, please sign in first at the top of the screen. • Information about free access to our news archive Search this site and the web: |