Petrified Woods

Petrified wood (the word originating from ancient Greek petro meaning "rock" or "stone"; literally "wood turned into stone") is the name given to the fossilized remains of terrestrial tree vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone or crystal by the process of per-mineralisation. All the organic materials have been replaced with minerals (mostly quartz), while retaining the original structure of the stem tissue.