Coastal Erosion,Seastack

Bildnummer 11718679
Coastal Erosion,Seastack
Coastal erosion. This image shows a present day seastack off the coast of Kythira,Greece. C025/9001 is a simulation of the same feature at an earlier stage showing how the connecting arch (keystone) prior to collapse,might have looked a few centuries previously. A sea arch is a natural opening eroded out of a cliff face by marine processes,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
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Parker, David
Bildgröße: 7195 px × 4762 px
Modell-Rechte: nicht erforderlich
Eigentums-Rechte: nicht erforderlich
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