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Comte de Buffon (1707—1788) French naturalist

Charles Lyell (1797—1875) geologist


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The theory that present-day processes provide a sufficient explanation for past geomorphological phenomena, although the rate of activity of these processes may have varied. The theory was first clearly expressed in 1749 by G. L. L. Buffon (1707–88), and was the essential principle of uniformitarianism as presented in 1830 by C. Lyell (1797–1875).

Subjects: Ecology and Conservation — Earth Sciences and Geography.

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