Petrified wood
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Petrified wood
Petrified wood. Petrified tree logs from the Late Triassic Period (over 206 million years ago). Petrification is a term used to describe the fossilisation of wood. It occurs when pieces of wood fall into sediments and are rapidly covered, preventing normal decay. Over long periods of time the wood decays. As it decays, the wood is replaced by minerals which are deposited from solution in ground water. This forms an exact replica of the original, preserving the texture of the bark and even the growth rings. Photographed in Petrified Forest National Park, Arizona, USA
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Media ID 6312975
© BOB GIBBONS/SCIENCE PHOTO LIBRARY
Arizona Dead Fossil Fossilised Fossilized Fossils Logs Mineralised Palaeobiological Palaeobiology Palaeontological Paleobiological Paleobiology Paleontological Pre Historic Pre History Preserved Rock Triassic Us A Palaeontology Petrified Forest National Park Petrified Wood
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