Sea arch. Sea arch projecting from a cliff. To the right of the arch is a rock which used to be part of another arch. Sea arches are formed when a land promontory is comprised of rock that varies in permeability. The more permeable sections of rock are more porous,and the action of the sea erodes these to a greater extent. Initially,caves form on either side of the promontory and gradually grow deeper until they coalesce to form an arch. A sea arch will continue to be eroded by waves,growing wider until it collapses. Photograph of the Green Bridge of Wales in Pembrokeshire,Wales | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Bond, Martin |
Taille de l’image : | 3569 px × 2945 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |