Coastal notch

Coastal notches are erosional features characterized by subhorizontal indentations formed at the base of resistant coastal cliffs. Their height and depth can range from a few centimeters to several meters, depending on tidal range, wave energy, rock strength, and other factors. Because they develop through processes such as abrasion, weathering, dissolution, and bioerosion occurring near the high tidal level, they are considered reliable indicators of past sea levels when observed along submerged…

abrasion geomorphology coastal processes Quaternary sea level erosion limestone