Basalt,close-up. This black volcanic rock has formed from the solidification of a lava flow. It contains microscopic crystals of the minerals plagioclase,pyroxene and green olivine. The lava formed by partial melting of the mantle at a depth of about 80 kilometres. This specimen is from the Upper Miocene (9.5 million years ago). It is part of the Geoscope geological park,located between Les Monts-Vert and Albaret-Sainte-Marie,central France | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Chillmaid, Martyn F. |
Bildgröße: | 5173 px × 3449 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |