Des demoiselles coiffees, France
Numéro d’image : 13620221
| Des demoiselles coiffees (literally Maidens with Hats) hoodoos, Theus, Alpes-Haute Provence, France. Although only a small formation of hoodoos this group contains a number of different characteristics. Cap stones vary considerably in size and when the cap rock is displaced the hoodoo typically weathers into a spike. These hoodoos are formed in banks of fluvio-glacial alluvium that was deposited on mountainsides during the last glaciations in the Alps. As this glacial clay was eroded by rain and snow melt over thousands of years some rocks protected the clays beneath them. There are two main hypotheses as to why the clay beneath the cap rock becomes harder and more resistant but the outcome is that the loose surrounding clays are washed away and the columns erode at a much slower rate. When the cap rock eventually slips off, the column becomes pointed as the top erodes faster. There is even a column capped with vegetation. | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Chillmaid, Martyn F. |
| Taille de l’image : | 4480 px × 6602 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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