Here is a good example of how water combined with earth changes can completely disturb and change a landscape forever – in a instant!
Imagine the entire earth flooded with water along with great earth changes, (i.e splitting of the continents) Entire Forests would have been buried as you saw in that video, coal seams anyone?
Generally speaking, Catastrophism is a better explanation for what we see than Uniformitarianism.
Uniformitarianism is the theory that the same natural laws and processes that operate in the universe now have always operated in the universe in the past and apply everywhere in the universe. It has included the gradualistic concept that “the present is the key to the past” and is functioning at the same rates.
Catastrophism is the theory that the Earth has been affected in the past by sudden, short-lived, violent events, possibly worldwide in scope. This was in contrast to uniformitarianism (sometimes described as gradualism), in which slow incremental changes, such as erosion, created all the Earth’s geological features.