Athabasca tar sands,Alberta,Canada,landsat image. This area of tar sands (blue),or oilsand,contains a third of the world's supply of petroleum. Tar sand is a combination of clay,sand,water and bitumen. The bitumen is mined from wells and then refined into petroleum. The Athabasca River runs alongside the tar sands | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / NASA |
Bildgröße: | 2731 px × 4020 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |