Millions of years of pressure and heat turned decaying animals and plants into coal.
A coal formed from Botryococcus Braunii deposits
Layers of sediments compressed the layers of vegetation to form the coal deposits.
Carboniferous
This is because natural gas and oil deposits were formed together
coal seam
Coal deposits form over a long period of time through biological and geological process. Dead plant matter is converted into peat, which is converted into lignite. Lignite is converted into sub-bituminous coal, after that bituminous coal, and lastly anthracite.
Coal deposits mean nothing at all to collie dogs.
what is a ridge formed from deposits are
Most coal deposits in the eastern nited
Sandstone is formed from deposits of sand.
The Country that has the known (proven) coal deposits in Africa is South Africa which is said to have reserves of 50 billion tonnes of coal.
Most coal deposits in the eastern United States are in the Appalachian Mountains. So coal mining has long been an industry in the Inland South.