Petrified Forest National Park,Arizona

Numéro d’image : 11630509
Petrified Forest National Park,Arizona
Petrified Forest National Park,Arizona: Giant Logs section. Millions of years ago fallen trees were buried by a mixture of silt,mud and volcanic ash. The sediment isolated them from the influence of the atmosphere and slowed their decay. Silica-laden groundwater seeped through the logs,infusing the cells with silica and replacing the original tissues. Later the silica crystallised into quartz and the logs were preserved as petrified wood. Colours are the result of different minerals in the silica-saturated waters
Licence : Droits gérés
Crédit: Science Photo Library / Williamson, Mark
Taille de l’image : 5145 px × 3444 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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