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Gallery Exhibits ISM Springfield Exhibits Changes Changes Online Objects Introduction Geologic Record opalized wood
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Geologic Record

1. banded iron ... 4. orbicular... 5. marble 6. nautiloid... 7. opalized wood 8. petrified wood 9. shale 10. stromatolite ... 12. varved clay

opalized wood

opalized wood fossil Utah Sometimes wood is replaced with a form of silica called opal. The preservation is so perfect that the cellular structure of the original wood is clearly visible under a microscope.

Date: 09/01/2005
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Full size: 400x758
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