Petrified Wood |
It looks so much like wood it is hard to believe that it is stone.
Petrified Wood |
It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralization. All the organic materials have been replaced with minerals (mostly a silicate, such as quartz),
while retaining the original structure of the stem tissue. Unlike other
types of fossils which are typically impressions or compressions,
petrified wood is a three-dimensional representation of the original
organic material. The petrifaction process occurs underground, when wood becomes buried under sediment or volcanic ash and is initially preserved due to a lack of oxygen
which inhibits aerobic decomposition. Mineral-laden water flowing
through the covering material deposits minerals in the plant's cells; as the plant's lignin and cellulose decay, a stone mold forms in its place. The organic matter needs to become petrified before it decomposes completely.[1] A forest where such material has petrified becomes known as a petrified forest. Wikipedia
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