| 词汇 | plate-tectonics |
| 释义 | plate tectonics noun[ U ] geology specializeduk /ˌpleɪt tekˈtɒn.ɪks/ us /ˌpleɪt tekˈtɑː.nɪks/ the study of how the surface of the earth is formed, how the separate pieces of it move, and the effects of this movement板块构造学（研究地球表面是如何形成的、其不同部分如何移动以及这种移动会产生什么效应） Geology - general words Anthropocene anticline apophysis auriferous biozone carboniferous continental plate geologically geomorphic gully erosion henge Holocene Permian petrographic petrographically petrography petrological Precambrian rockfall syncline plate tectonics | American Dictionaryplate tectonics noun[ U ] us/ˈpleɪt tekˈtɑn·ɪks/ earth science the theory that the earth's surface is made of large layers of rock that are always moving, causing earthquakes and volcanoes, and explaining the creation of the varied features of the earth's surface Examples of plate tectonicsplate tectonics Subduction of dense cold plates into the mantle leads to platetectonics. The requirements for platetectonics of water and mass are also independently requirements for habitable planets. So these requirements for platetectonics are already fundamental conditions for a habitable planet. If platetectonics occurs, it must involve crustal fractionation into components with different buoyancy. The model is based on the global carbon cycle mediated by life and driven by increasing stellar luminosity and platetectonics. The likelihood of platetectonics is difficult to predict. In other words, the incidence of platetectonics on a planet which we identify as potentially habitable could be quite high. In this paper we speculate on how platetectonics influences surface mineralogy, and identify three examples which could influence the development of life. A third choice would be to focus on the time before platetectonics, a time that is poorly understood and hard to specify. There are a number of exercises new to this edition using the new technology outlined above to illustrate concepts associated with platetectonics. The last six chapters cover more advanced topics: rheological models, brittle failure, strain measurement, balanced cross sections, deformation mechanisms, and the geometry of platetectonics. The issues under discussion have evolved not analogous to platetectonics in a slow, orderly pattern, but more like a volcanic explosion. Particularly provoking is a chapter on future platetectonics with scenarios for time periods from +50 to +200 million years ahead. This was confirmed by palaeomagnetic research almost 34 years later, once the theory of platetectonics had been firmly established. The third chapter introduces platetectonics in a thoroughly confusing way. See all examples of plate tectonics These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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