formation coal vector illustration labeled educational rock birth scheme |
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navigate by keyword : coal concept diagram different earth educational element environment example explanation formation foundation fractured geo geologic geological geology ground heat illustration info infographic labeled lignite material mine mineral mining model natural ocean peat pressure process rock scheme sediment sedimentary slate solid stages steps stone structure substance swamp time timeline today vector |
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Formation of coal vector illustration. Labeled educational rock birth scheme. Carbon stone diagram from geological time and pressure aspect. Swamp and ocean structural process explanation infographic. |
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