| 单词 |
geosynclinal |
| 释义 |
geosynclinal, a. and n. Geol.|dʒiːəʊsɪŋˈklaɪnəl|
[f. geo- + synclinal.]
A. adj. Forming a large depression in the surface of the earth, from the lowest point of which there is a gradual rise to either side, even although the continuity of this is broken by smaller depressions. The opposite of geanticlinal.
1879Dana Man. Geol. (ed. 3) 817 Flexure implies both upward and downward bendings, geanticlinal and geosynclinal, the one a complement to the other. 1882A. H. Green Phys. Geol. xiii. (ed. 3) 630 After the geosynclinal mass had accumulated the state of things stood thus.
B. n. A geosynclinal dip or depression in the earth's surface.
1873Dana in Amer. Jrnl. Sci. Ser. iii. V. 430 The making of the Alleghany range was carried forward at first through a long-continued subsidence—a geosynclinal (not a true synclinal). 1882A. H. Green Phys. Geol. xiii. (ed. 3) 629 To the great trough-shaped mass of rock which was thus accumulated Dana has given the name of a Geosynclinal. Ibid. The geosynclinal of a mountain-chain. |
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