Volcanic breccia. A breccia is a rock with fragments of one material cemented within a matrix of a different material. In this case,the fragments are wood and plant remains,which probably became embedded within ash or lava during a volcanic eruption. The remains were fossilised and pressure and heat solidified the rock into this dense structure. This polished sample measures 110 millimetres across | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5088 px × 3569 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |