Silica in fossil wood

Silica in fossil wood

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Credit: DIRK WIERSMA/SCIENCE PHOTO LIBRARY

Caption: Silica in fossil wood. The wood (black) had become partly cracked and decayed prior to its fossilisation. In a later stage, after the wood had fossilised, silica (white) filled the cracks by precipitation from water percolating through the cracks.

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Keywords: close-up, crack, cracks, deposit, deposition, detail, earth sciences, fossil, fossilisation, fossilised, geological, geology, lithification, mineral, mineralisation, palaeontological, palaeontology, paleontological, paleontology, percolation, petrified, rock, silica, stone, wood

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