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单词 the drift
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the Drift
a. Geology. A term applied (a) to any superficial deposit caused by a current of water or air; also (b) spec. ( the Drift) to Pleistocene deposits of glacial and fluvio-glacial detritus, also known as boulder-clay, and till; diluvium.
ΘΚΠ
the world > the earth > structure of the earth > constituent materials > sediment or alluvium > [noun] > diluvium
alluvion1731
diluvium1819
drift1839
1839 R. I. Murchison Silurian Syst. i. xxxvii. 509 Each region of the earth has its own superficial diluvia, produced by separate and distinct action; [for these] the unambiguous word drift is proposed.
1851 D. Wilson Archæol. & Prehistoric Ann. Scotl. i. i. 23 Accumulations of marine and fresh-water shingle and gravel called drift and diluvium.
1865 J. Lubbock Prehist. Times Pref. 1 The Flint Implements of the Drift.
1869 R. B. Smyth Gold Fields Victoria 609 Drift, loose sand or a very loose friable alluvial deposit met with in some places close to the washdirt.
1882 A. Geikie Text-bk. Geol. vi. v. i. §1. 858 This ‘glacial drift’ spreads over the low ground of the glaciated districts.
1892 S. R. Gardiner Student's Hist. Eng. 2 These Palæolithic men of the river drift.
figurative.1878 W. P. Roberts Law & God (ed. 5) 44 In the Protestant drift may often be found..the implements of Rome.attributive.1850 R. W. Emerson Plato in Representative Men ii. 43 The mountain from which all these drift boulders were detached.1865 J. Lubbock Prehist. Times x. 323 This drift-age cone..is about twelve times as large as that now forming.1872 W. S. Symonds Rec. Rocks iv. 113 The removal of the drift deposits allows the underlying rocks to become visible.
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