Welwitschia mirabilis in petrified forest

Numéro d’image : 11743148
Welwitschia mirabilis in petrified forest
Welwitschia (Welwitschia mirabilis) growing in a petrified forest. This succulent plant is a living fossil,meaning that it is a species known to exist currently and to exist in fossil records. It has only two leaves and can live for in excess of 1000 years. Petrifaction is the process by which the tree's organic matter has been replaced with minerals which preserve the original structure of tree. It is a subterranean process in which sediments are first laid down on the tree after which water flows through the sediments. Over time the tree's cells are replaced with minerals from the water which form stone in their place. Photographed in Namibia
Licence : Droits gérés
Crédit: Science Photo Library / Stammers, Sinclair
Taille de l’image : 3412 px × 5118 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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