Uniformitarianism:The principle that the processes operating in the past are the same as those observed today, leading to the idea that 'the present is the key to the past' in understanding geological history.
Geological Time Scale: A system of chronological dating that relates geological strata to time, helping to organize Earth's history into segments like eons, eras, periods, and epochs.
Metamorphism:The process by which existing rocks are transformed into metamorphic rocks through heat, pressure, and chemically active fluids, which was essential to Hutton's theories on rock formation and change.