单词	plate tectonics
释义	plate tectonics noun plural in form but singular in construction 1 : a theory in geology: the lithosphere of the earth is divided into a small number of plates which float on and travel independently over the mantle and much of the earth's seismic activity occurs at the boundaries of these plates 2 : the process and dynamics of tectonic plate movement also : a similar process on a body other than earth compare continental drift plate-tectonic ˈplāt-tek-ˈtä-nik  adjective Example Sentences Recent Examples on the Web The team’s plate tectonics between its two major continents — Gobert and Mitchell — widened during that time, with allegedly little hope of reversing the crustal float. Gordon Monson, The Salt Lake Tribune, 1 Sep. 2022 The earliest indications of plate tectonics appeared about 3.8 billion years ago, not too long after the Earth's formation. John Timmer, Ars Technica, 11 Aug. 2022 This was the era of the plate tectonics revolution—widespread adoption of the once-controversial theory that the Earth’s crust comprises shifting plates that butt against each other or pull apart, producing volcanic eruptions, among other things. Katherine Cusumano, Outside Online, 15 July 2022 This means that, rather than arising from slipping or grinding plate tectonics, the Red Planet’s seismic activity must emerge from some other mechanism. Joanna Thompson, Scientific American, 24 May 2022 Mars lacks plate tectonics, the sliding of pieces of the crust that shapes the surface of our planet. Kenneth Chang, New York Times, 17 May 2022 The book could easily have been just a frothy collection of trivia, but Bjornerud skillfully feeds the reader nibbles of geology’s meatier concepts like deep time, plate tectonics, and the co-evolution of life and our planet. Howard Lee, Ars Technica, 7 May 2022 Uncertainty arises because the geologic record from Earth's youth is sparse, due to the surface recycling effect of plate tectonics itself. David Bressan, Forbes, 24 Apr. 2022 The lesions can change shape and location, a little like an oral version of plate tectonics. Scott Lafee, San Diego Union-Tribune, 12 Apr. 2022 See More Word History First Known Use 1969, in the meaning defined at sense 1 Kids Definition plate tectonics noun plate tec·​ton·​ics -tek-ˈtä-niks  : a scientific theory that the earth's surface is made of very large sections that move very slowly
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