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Who wrote Principles of geology?
Who was Charles Lyell?
Why did John Lyell study geology?
What is Lyell's theory?
The motto of uniformitarianism was “the present is the key to the past.” Lyell’s friend, Charles Darwin, took that idea and extended it to biology. In fact, Lyell’s Principles of Geology was one of the few books that Darwin carried on his famous voyage on the HMS Beagle — a voyage that led him to write The Origin of the Species.
In Lyell's work, he described the three rules he believes to cause the steady change of the Earth. The first rule is that geologic change comes from slow and continual procedures that have been happening over a long period of time.  This rule is the basic ideal of Uniformitarianism and is easy to understand why this was a rule.
His observational methods and general analytical framework remain in use today as foundational principles in geology.  Evolution [ edit] Lyell initially accepted the conventional view of other men of science, that the fossil record indicated a directional geohistory in which species went extinct.
Nov 14, 2018 · Lyell was a close friend to Charles Darwin and is best known as the author of Principles of Geology, which popularized James Hutton ‘s concepts of uniformitarianism – the idea that the earth was shaped by the same processes still in operation today.
In his three volume book Principles of Geology, Charles Lyell (1797–1875) argued for the gradual change of the earth and its climate over very long periods of time. In the 19th century geology was an emerging discipline, principally concerned with the earth’s history.