One of the largest concentrations of petrified wood in the world is found at Petrified Forest National Park in eastern Arizona, USA, about 110 miles east of Flagstaff and 210 miles west of Albuquerque, New Mexico. Scientific studies show that the petrified trees found within the park date back 211 to 218 million years. In December 1906, President Theodore Roosevelt created Petrified Forest National Monument, and 56 years later, in 1962, it was designated a national park. Petrification is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Parker, David |
Taille de l’image : | 4784 px × 7200 px |
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