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Crystal Forest - Petrified Forest
Arizona

Crystal forest.

Petrified trees today lie strewn across clay hills and within cliff faces; each log broken into large segments. The quartz within the petrified wood is hard and brittle, fracturing easily when subjected to stress. During the gradual uplifting of the Colorado Plateau, starting about 60 million years ago, the still buried petrified trees were under so much stress they broke like glass rods. The crystal nature of the quartz created clean fractures, evenly spaced along the tree trunk, giving the appearance today of logs cut with a chainsaw.

Petrified Forest National Park

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Copyright: Toni Garbasso
Type: Spherical
Resolution: 10000x5000
Taken: 12/11/2009
Uploaded: 08/03/2010
Updated: 10/06/2014
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Tags: petrified forest; painted desert; desert; fossil
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