Columnar basalt rock. Basalt is a fine-grained,extrusive igneous rock found in most lava flows. Its pentagonal and hexagonal geometry is due to contraction on cooling. Basalt is extensively used in the construction industry. Photographed in Canada | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Nunuk, David |
Taille de l’image : | 5102 px × 3425 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |