It is a question of Creation & Evolution that often come along with the two other theories 'Gradualism and Castarophim'.
In the philosophy of naturalism, the uniformitarianismassumption is 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. Uniformitarianism has been a key principle of geology, but naturalism's modern geologists, while accepting that geology has occurred across deep time, no longer hold to a strict gradualism.
Hope it helped!
Hadi Mufid