13" Jurassic Petrified Wood (Araucaria) Round - Utah

This is a colorful, 13" wide polished round of petrified wood from the Morrison Formation near Hanksville, Utah. One side has been polished to a glossy finish. Beautiful coloration on this specimen with several agate filled cracks. Spots of fungal rot can be seen throughout the polished face.

This beautiful round of petrified wood is Upper Jurassic in age or approximately 150 million years old. The formation which it comes from is the same formation known for producing fossils of well known dinosaurs such as Allosaurus and Diplodocus. So this tree was living at the same time as the dinosaurs!

It comes with a metal display stand.

Petrified wood is the name given to wood that has been turned into stone (fossilized) through the process of permineralization. All of the organic matter becomes replaced by minerals, while much of the original structure such as tree rings in retained. For this to happen the wood needs to be buried in an environment both low in oxygen (preventing decomposition) and with flowing, mineral-laden water. The coloration is due to the various minerals that are present during fossilization. For example red colors are due to iron compounds, greens due to copper, etc.
Araucaria sp.
Hanksville area, Utah
Morrison Formation
13 x 12", 1.05" thick
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