catastrophism
Geological theory that Earth's features were shaped by sudden, violent events rather than gradual processes. Contrasts with 斉一説 (uniformitarianism).
Catastrophism was once a dominant idea in geology.
天変地異説と斉一説は、地球の歴史をどう見るかで対立している。
Catastrophism and uniformitarianism conflict over how to view Earth's history.