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Fossilized wood trunk Araucarioxylon arizonicum | Arizona, USA
Fossilized wood trunk Araucarioxylon arizonicum | Arizona, USA
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€20.000,00 EUR
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- Origin: Arizona, USA
- Age: Triassic, 220 million years
- Size: H81cm W43cm L54cm
- Weight: 338kg
- Description: This attractive stem of Araucarioxylon arizonicum was cut and trimmed from a larger stem found near Petrified Forest National Park in Arizona. The outer surface is almost entirely covered in fossilized bark, which is an extreme rarity as the softer material is not often preserved. The tree trunk is cut open in cross-section and polished to reveal the preserved formation of the tree's annual rings, accented in colors of red, orange, ocher and black.
- Additional information: Petrified wood, fossil formed by the penetration of minerals into the cavities between and within the cells of natural wood, usually silica (silicon dioxide, SiO2) or calcite (calcium carbonate, CaCO3). The petrified forests of the western United States are silicified wood in which the tree tissue has been replaced by chalcedony (cryptocrystalline quartz). Often this replacement is so accurate that both the internal structure and external form are faithfully reproduced; sometimes even the cell structure can be determined.
