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What is a formation of coal?

Updated: 9/21/2023
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12y ago

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Millions of years ago, large areas of the Earth's land area were covered in dense peat swamps. Over time, the peat in the swamps was buried, and forced deep underground. Extreme pressure and heat eventually turned the peat into soft coal, and later some if that became hard coal also as a result of heat and pressure.

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12y ago
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Q: What is a formation of coal?
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