单词 | lithosphere |
释义 | > as lemmaslithosphere lithosphere n. Brit. /ˈlɪθəsfɪə/ , U.S. /ˈlɪθəˌsfɪ(ə)r/ [sphere n.] a term (corresponding to atmosphere and hydrosphere) used by some to designate the crust of the earth; in modern use, usually applied to the crust and the upper part of the mantle; formerly also used for the crust together with the whole interior portion of the earth, or the crust together with the entire mantle.ΘΚΠ the world > the earth > structure of the earth > [noun] > geosphere > lithosphere lithosphere1887 1887 Times 6 Sept. 11/3 The form of the lithosphere and the material of its surface. 1893 A. Geikie Text-bk. Geol. (ed. 3) 38 (heading) The solid globe or lithosphere. 1900 Appletons' Pop. Sci. Monthly Feb. 436 Thus were formed the oceanic basin and the continental arches of the lithosphere. 1910 P. Lake & R. H. Rastall Text-bk. Geol. i. 8 The Lithosphere or solid part of the earth, so far as it is open to our inspection, consists of rocks. 1950 K. Rankama & T. G. Sahama Geochem. ii. 32 The Sial crust, which is the surface layer of the silicate shell of the Earth (the lithosphere), is composed of three groups of rocks of different origin. 1957 G. E. Hutchinson Treat. Limnol. I. iv. 222 The water content of the major part of the lithosphere, the great mantle of ultrabasic rock which composes most of the earth, is unknown. 1971 I. G. Gass et al. Understanding Earth xvi. 248/1 As a result of seismological studies, it has been realised that the Earth's outermost skin, or lithosphere, which exhibits appreciable strength and rigidity, extends well beneath both continental and oceanic crusts to depths of 50 or even 100 km. 1973 M. W. McElhinny Palaeomagnetism & Plate Tectonics v. 156 In this ‘new global tectonics’.., now generally referred to as Plate Tectonics, it is supposed that a mobile, near-surface layer of strength (the lithosphere) plays a key role... The lithosphere, which generally includes the crust and uppermost mantle, has significant strength, and is of the order of 100 km thickness. The asthenosphere, which is a layer of effectively no strength on the appropriate time scale, extends from the base of the lithosphere to a depth of several hundred kilometres. < as lemmas |
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