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单词 eifelian
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Eifelian
Eifelian adj. and n. /aɪˈfiːlɪən/ [ < French eifélien (A. H. Dumont 1848, in Mém. de l'Acad. R. des Sciences, etc., de Belgique XXII. 67)]
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1853 Q. Jrnl. Geol. Soc. 9 20 The Eifelian limestone and schists of Belgium and the Rhenish provinces.
1895 J. D. Dana Man. Geol. (ed. 4) 626 The Lower, Middle, and Upper divisions are named (1) the Rhénan, (2) the Eifelian, and (3) the Famennian.
1912 A. J. Jukes-Browne Student's Handbk. Stratigr. Geol. (ed. 2) 217 Middle Devonian. This also comprises two divisions, the Eifelian and the Givetian.
1957 Encycl. Brit. VII. 289/2 The Eifelian (Couvinian in Belgium) consists of limestones and shales abounding in corals and brachiopods.
1963 D. W. Humphries & E. E. Humphries tr. H. Termier & G. Termier Erosion & Sedimentation xiii. 290 Most of the others are Eifelian, and the reef barrier seems to have persisted almost to the Late Devonian.
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