What narrative is described as exhibiting large, catastrophic changes in Earth's geology?

The narrative described as exhibiting large, catastrophic changes in Earth's geology is Catastrophism. This concept posits that the Earth's geology and landscape have been shaped significantly by sudden and severe events, such as volcanic eruptions, earthquakes, and massive meteorite impacts. Catastrophism highlights that these dramatic events have played a crucial role in shaping the planet's features and have led to significant changes in the Earth's environment and biodiversity over geological time scales.

This perspective contrasts with other narratives like Uniformitarianism, which suggests that geological processes occurring today have always operated in the same way, leading to gradual changes over long periods. On the other hand, the idea of constant-rate change aligns closely with Uniformitarianism and implies a slow, steady pace of geological change, rather than the sudden, disruptive events emphasized in Catastrophism. The Cretaceous-Tertiary Extinction, while a specific event illustrating catastrophic change, falls under the broader framework of Catastrophism rather than representing the general principle itself.