| 单词 | oceanic trench |
| 释义 | > as lemmasoceanic trench oceanic trench n. Geology = trench n. 5. ΘΚΠ the world > the earth > water > sea or ocean > region of sea or ocean > [noun] > sea bed > trench or cavity in alveus1670 basin1881 trench1903 foredeep1909 oceanic trench1945 ocean trench1956 1945 Bull. Geol. Soc. Amer. 56 654 Earthquake foci at given depths fall into definite places in a series of consecutive linear features... The normal order is..: (A) An oceanic trench, trough, or foredeep. 1968 R. W. Fairbridge Encycl. Geomorphol. 35 ‘Pacific’ tectonics are those associated with contemporary orthogeosynclines, island arcs, oceanic trenches and active foredeeps. 1990 P. Kearey & F. J. Vine Global Tectonics i. 5 It was..proposed that the oceanic crust is thrust back down into the mantle and resorbed at oceanic trenches. < as lemmas |
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