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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Stammers, Sinclair |
Taille de l’image : | 4702 px × 3767 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |