What are examples of slow land changes

An example would be the increase in land mass after a volcanic eruption. Oceans and continents exemplify highest-order landforms. Landform elements are parts of a landform that can be further identified. Landform elements, such as hill-top, shoulder, backslope etc, can be observed on many various geomorphological landforms. The generic landform elements are: pits, peaks, channels, ridges, passes, pools, planes etc, and can be often extracted from a digital elevation model using some automated or semi-automated techniques