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  Slide_022.jpg - Layered sediments tinted by different minerals.  The light grey strata, composed of fine volcanic ash, are where many of the petrified logs were buried.  
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Layered sediments tinted by different minerals. The light grey strata, composed of fine volcanic ash, are where many of the petrified logs were buried.
Total images: 26 | Last update: 10/17/08 5:33 PM | Help