Chert rock. Hand resting on a sample of rock from the Rhynie chert deposit in Scotland. Chert is a dense,siliceous (silica-rich) rock found in limestone areas. The Rhynie deposit is rich in well-preserved plant and arthropod fossils from the Devonian period (410-355 million years ago). This sample is approximately 396 million years old | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Stammers, Sinclair |
Bildgröße: | 4702 px × 3767 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |