| 单词 | plateau gravel |
| 释义 | > as lemmasplateau gravel plateau gravel n. Geology gravel occurring in a sheet on hilltops or a plateau, at a height that suggests it has been raised by earth movement since its deposition. ΘΚΠ the world > the earth > structure of the earth > constituent materials > stone > stony material > [noun] > gravel or shingle > gravel > type of flood gravelc1420 river gravel1600 blue metal1699 slither1811 flint-gravel1865 plateau gravel1872 duck-gravel1885 peastone1909 pea gravel1911 1872 Wood & Harmer in S. V. Wood Suppl. Monogr. Crag Mollusca p. xxvi. (heading) The Plateau gravel. 1881 Proc. Geologists' Assoc. 1879–81 6 33 On the top of Crawley (Portesbury) Hill..the plateau-gravel, with its overlying loam (loess) and its ferruginous layers, is well seen in the railway-cutting. 1970 R. J. Small Study of Landforms vii. 234 In the New Forest.., the Tertiary sands and clays are overlain at many points by thick plateau gravels of Quaternary age. < as lemmas |
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