A coastline of emergence refers to a type of coastline where the land is rising relative to the sea level. This rise in land can be caused by geological processes such as tectonic movements or isostatic rebound.
One example of a coastline of emergence is a **raised beach**. A raised beach is a coastal landform that was once at sea level but has been lifted up above the current sea level. This lifting can occur due to processes like tectonic activity or changes in the Earth's crust.
When the land rises, the shoreline shifts upwards, leaving behind a flat or gently sloping platform. This platform, known as a raised beach, is typically located above the reach of waves and tides. It can vary in width and elevation, extending for several kilometers inland.
A raised beach often has distinctive features such as wave-cut notches, terraces, and marine deposits like shells or sediments. These features serve as evidence of its former connection to the sea.
It is important to note that a raised beach is just one type of coastline of emergence. Other examples include dalmation coasts, ria coasts, and estuarine coasts. However, among the given options, a raised beach best represents a coastline of emergence.