Pumice stone. This soft abrasive igneous rock originated as part of a pyroclastic flow from the 1883 eruption of Krakatoa (Krakatau). It has a vesicular texture,a high silica content and a low density. It can still be found floating in the Sundra Strait between Sumatra and Java | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Clutson, Michael |
Taille de l’image : | 5400 px × 3600 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |