Uniformitarianism

James Hutton proposed that the age of the Earth could be understood through the slow and uniform processes of geological change, laying the groundwork for the science of geology by emphasizing the Earth's long history and gradual change.
 James Hutton England 1785 Uniformitarianism

James Hutton proposed that the age of the Earth could be understood through the slow and uniform processes of geological change, laying the groundwork for the science of geology by emphasizing the Earth's long history and gradual change.