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Coal formation

Coal formation

This video presents the different stages of coal formation.

03:53

Geography

Keywords

coal, dinosaur, economy, industry, mining, graphite, diamond, plate tectonics, geography, nature

On-screen labels

coal: a type of sedimentary rock of organic origin, layer of sludge, peat, Living tree, calorific value: 50%, Peat, calorific value: 60%, ~ 10 000 years, lignite, ~ 5 - 10 million years, calorific value: 65%, ~ 60 - 80 million years, sub-bituminous coal, calorific value: 70%, bituminous coal, ~ 150 - 300 million years, calorific value: 90%, anthracite, calorific value: 98%, metamorphosis, graphite, calorific value: 100%, rock layer containing carbon, asthenosphere, diamond formation, pressure: 4500-6000 MPa, temperature: 1000-1300 ℃, diamonds rise to the surface, volcanic activity, ~ 1 - 3 billion years
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