Coastal Erosion,Simulated Arch

Numéro d’image : 11718694
Coastal Erosion,Simulated Arch
Coastal erosion. This image of a coastal promontory off the coast of Kythira,Greece,has been manipulated to show how the arch keystone might have appeared before its collapse. C025/8986 shows the same feature as it appears in the present day. A sea arch is a natural opening eroded out of a cliff face by marine processes and may take many hundreds of years to form. Arches are therefore ephemeral geological landforms. They develop where waves attack a plane of weakness which cross-cuts a promontory. Caves produced on either side of a promontory might be joined over time to become a tunnel and,finally,an arch. Ultimately the keystone itself will erode leaving only a seastack. The architecture of an arch and the speed of its erosion is a reflection of its lithology and structure
Licence : Droits gérés
Crédit: Science Photo Library / Parker, David
Taille de l’image : 7195 px × 4762 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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