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单词 diluvium
释义

diluviumn.

/dɪˈl(j)uːvɪəm/
Etymology: < Latin dīluvium flood, inundation, deluge, < dīluĕre to wash to pieces, wash away, dissolve by water: see dilute adj.
A term applied to superficial deposits which appear not to have been formed by the ordinary slow operations of water, but to be due to some extraordinary action on a vast scale; such were at first attributed to the Noachian or Universal deluge, whence the name; the chief of these deposits were those of the Northern Drift or Boulder formation at the close of the Tertiary Period, to which the name continued to be applied after the theory of their origin was given up; it is now generally ‘applied to all masses apparently the result of powerful aqueous agency’.
ΘΚΠ
the world > the earth > structure of the earth > constituent materials > sediment or alluvium > [noun] > diluvium
alluvion1731
diluvium1819
drift1839
1819 J. Hodgson in J. Raine Mem. J. Hodgson (1857) I. 265 The cliffs are very white, excepting where they are tarnished by diluvium falling from the tops of the cliffs.
1823 W. Buckland Reliq. Diluvianæ 2 The word diluvium..I apply to those extensive and general deposits of superficial loam and gravel, which appear to have been produced by the last great convulsion that has affected our planet.
1831 H. T. De la Beche Geol. Man. iii. 174 The old transported gravel, or diluvium of Prof. Buckland.
1839 R. I. Murchison Silurian Syst. i. xxxvii. 509Diluvium’ as used by Elie de Beaumont and the modern foreign geologists, means precisely what I term drift.
1849 M. Somerville On Connexion Physical Sci. (ed. 8) x. 87 Strata containing marine diluvia..must have been formed at the bottom of the ocean.
1862 J. Taylor in Macmillan's Mag. Sept. 390 Tusks and teeth in a bed of diluvium..immediately incumbent on stratified beds of lias.
1874 J. Geikie Great Ice Age xxvii. 398 (heading) Ancient alluvium or diluvium overlying moraine-profonde.
1874 C. Lyell Student's Elem. Geol. (ed. 3) xi. 145 The term ‘diluvium’ was for a time the popular name of the boulder formation, because it was referred by many to the deluge of Noah, while others retained the name as expressive of their opinion that a series of diluvial waves raised by hurricanes..or by earthquakes..had swept over the continents, carrying with them vast masses of mud and heavy stones.
This entry has not yet been fully updated (first published 1896; most recently modified version published online March 2018).
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n.1819
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