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Petrified Wood - Oak

This stunning piece of petrified oak wood is approximately 20 million years old. Complex contrasts of dark brown, golds, creams and even some rare blue chalcedony appears in this beautiful piece from Oregon. Petrified wood forms when a tree falls and is rapidly buried by sediment such as volcanic ash or river sediments. This creates a reduced oxygen environment (anaerobic) which halts the usual decay process. Minerals carried through the flow of water and absorbed into the tree slowly began to replace the organic material and crystallize. Over hundreds and thousands of years this crystallization took place hardening into stone. Composed mostly of silica (quartz), small concentrations of other elements including iron, carbon and manganese created the beautiful color variations seen here.

Approx. 11.25" L x .75" W x 9.5" H

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