Science in a nutshell
Notches
Marine notches are indentations or undercutting a few centimetres to several metres deep, produced by sea action in coastal rocks. They reflect processes of destruction around the surf zone much more intensive than in subtidal or supratidal positions.The processes of notch formation fall under the general category of marine and subaerial processes that sculpture rocky coasts, including all the physico-chemical and biological processes.
Notch shape can has importance as a sea-level marker.
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