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10 November, 08:07

When did the coal deposits of the eastern united begin to form? What were environmental conditions like at that time?

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  1. 10 November, 09:35
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    Although the the when they formed is unknown coal formed really just like anyplace else, it started millions of years ago. It really depends on what time era were talking about. But they were probably more plains and woods then anything.
  2. 10 November, 09:58
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    It started millions of years ago
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