| 释义 |
Eifel|ˈaɪfəl|
The name of a plateau in Western Germany, used attrib. to designate a subdivision of Middle Devonian in the region so named, and the rocks. Hence Eifelian |aɪˈfiːlɪən| a. and n. [ad. F. eifélien (A. H. Dumont 1848, in Mém. de l'Acad. R. des Sciences, etc., de Belgique XXII. 67)].
1853Q. Jrnl. Geol. Soc. IX. 20 The Eifelian limestone and schists of Belgium and the Rhenish provinces. Ibid. 23 The Système eifelien of M. Dumont is formed of three distinct groups,—the Eifel limestone, Eifel fossiliferous schists, and the red sandstones and conglomerates. 1879Encycl. Brit. X. 341/2 Stringocephalus group, consisting of the great Eifel limestone with underlying crinoidal beds. 1895J. 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. 1912A. J. Jukes-Browne Strat. Geol. (ed. 2) 217 Middle Devonian. This also comprises two divisions, the Eifelian and the Givetian. 1957Encycl. Brit. VII. 289/2 The Eifelian (Couvinian in Belgium) consists of limestones and shales abounding in corals and brachiopods. 1963D. W. & E. E. Humphries tr. Termier's Erosion & Sedimentation xiii. 290 Most of the others are Eifelian, and the reef barrier seems to have persisted almost to the Late Devonian. |