Polarised light micrograph of a thin section of 'Greywacke', a sedimentary rock composed of variously sized fragments in a generally fine matrix. This is typical of deposited materials which have not been transported far from their source & therefore have had little time to become smooth & round through weathering. This specimen is from Lendalfoot, UK. Horizontal object size 4.0 mm. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Pasieka, Alfred |
Taille de l’image : | 5472 px × 3648 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |