or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology Lyell, Charles, Sir 1797-1875 creator text utu 2010 monographic en 1 online resource : multiple file formats "Principles of Geology" by Sir Charles Lyell is a three-volume work published between 1830 and 1833. Lyell challenged prevailing beliefs by proposing that Earth's surface changed through slow, gradual processes rather than catastrophic events. Using evidence from Mount Etna and other geological formations, he argued that present-day processes explain the past, suggesting Earth was far older than previously thought. His theory of uniformitarianism revolutionized geology and profoundly influenced Charles Darwin, who carried the first volume aboard the HMS Beagle. (This is an automatically generated summary.) Wikipedia page about this book: https://en.wikipedia.org/wiki/Principles_of_Geology Release date is 2010-07-22 Produced by Julia Miller, Turgut Dincer and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.) Original publication data not identified Geology QE Original publication data not identified https://www.gutenberg.org/ebooks/33224 https://www.gutenberg.org/ebooks/33224 UtSlPG 260607 20260610133746.0 33224