the crust underlying the earth's ocean basins, now known to consist of a layered system of dense basalts and gabbros, of relatively uniform…
| 单词 | θ6169 |
| 释义 | the world > the earth > structure of the earth > [noun] > crust > parts of crust (6) oceanic crust1863 the crust underlying the earth's ocean basins, now known to consist of a layered system of dense basalts and gabbros, of relatively uniform… platform1880 Physical Geography. More fully continental platform. A part of the earth's crust above the level of the ocean basins, comprising the continents and… sal1909 Also Sal. = sial, n. (now superseded by that term). Obsolete. sima1909 In any of several theories of the structure of the earth: the lower part of the earth's crust, composed of relatively dense rocks rich in silica and… sial1922 The discontinuous upper layer of the earth's crust represented by the continental masses, which are composed of relatively light rocks rich in silica… ocean crust1927 = oceanic crust n. at oceanic, adj. compounds. |
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