单词	continental drift
释义	continental drift noun : a slow movement of the continents on a deep-seated viscous zone within the earth compare plate tectonics Example Sentences Recent Examples on the Web Eons in advance, then, cartographers and earth scientists are clocking continental drift and fantasizing about new worlds. Virginia Heffernan, Wired, 26 Oct. 2021 The revolutionary theory of continental drift advanced by Alfred Wegener in 1912, was rejected by mainstream geologists for four decades and only became popular after the mechanism of plate tectonics was recognized. Avi Loeb, Scientific American, 3 June 2021 The heat is from Earth’s molten interior, which causes continental drift. Caroline Delbert, Popular Mechanics, 15 Mar. 2021 This causes different things—not just earthquakes and volcanoes, but also continental drift and the consequent destruction and recreation of crust. Caroline Delbert, Popular Mechanics, 9 Dec. 2020 As the continent slowly shifted northward — because of continental drift — from 55 to about 34 million years ago, more seasonal plants appeared, creating forests. Washington Post, 4 Dec. 2020 When continental drift broke Pangaea apart, the ginkgo vanished from North America. Clive Thompson, The Atlantic, 9 Oct. 2020 Two hundred million years ago, with the continental drift? Marion Renault, The New Republic, 6 Oct. 2020 Natural selection depends on unpredictable mutations, and once a species emerges, its fate can be influenced by all sorts of forces, from viral outbreaks to continental drift, volcanic eruptions and asteroid impacts. Quanta Magazine, 17 July 2014 See More Word History First Known Use 1926, in the meaning defined above
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