Hydrothermal veins of cryptocrystalline quartz intruded into metamorphosed Silurian rocks under extreme heat and pressure once deep in the earth's crust,now exposed at beach level at Tresaith,Ceredigion,West Wales Coast | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Stammers, Sinclair |
Taille de l’image : | 5137 px × 3402 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |