Retreating glacier. A glacier is a huge mass of ice formed of compacted snow,moving slowly over a land mass. As it moves,the glacier erodes the rock beneath it,creating a U-shaped valley. The glacier carries rock debris that has fallen from the sides of the valley. As a glacier retreats,it leaves behind piles of such rocks,called glacial moraine. In this case,the moraine has been deposited along the sides of the glacier,forming lateral moraine. A glacier retreats when it melts faster than snow accumulates. Photographed in the Swiss Alps | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / JEREMY WALKER |
Taille de l’image : | 7382 px × 2441 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |