Petrified wood specimen. Petrifaction describes 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. This specimen is from volcanic deposits laid down in West Java,Indonesia. It dates from the Miocene epoch (between 23 million and 5 million years ago) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 3425 px × 5138 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |