| 释义 |
† Rhénan, a. Geol. Obs.|renɑ̃|
Also Rhenan(e).
[a. F. Rhénan Rhenish, ad. L. Rhēnanus, f. Rhēnus, the river Rhine.]
The name given by A. Dumont (Bull. de l'Acad. R. de Belg. (1848) XV. 684) to an independent terrain (‘system’) of the Palaeozoic found in the Rhineland (see quot. 18531), identified by later writers with the Lower Devonian or the Siegenian and Emsian stages; of or pertaining to that series or those stages. Also absol.
1853Q. Jrnl. Geol. Soc. IX. 24 [The Terrain Rhénan of M. Dumont comprises three divisions, of which the lowest or Système gedinnien appears to belong to the top of the Silurian system. The two upper divisions, called Ahrien and Coblenzien, which are consequently intermediate between the Old Red Sandstone and the Silurian system, have not yet been recognized in England.] Ibid. 25 The red sandstones are not naturally the base of the Eifel series, but rather the top of the Rhenane series. Ibid., The ‘Gedinnian system’ must be entirely separated from the Rhenane series, with which..it has no organic remains in common. 1895J. D. Dana Man. Geol. (ed. 4) 626 The Lower, Middle, and Upper divisions [of the Devonian] are named (1) the Rhénan, (2) the Eifelian, and (3) the Famennian. Ibid. 627 In the Eifel, the three divisions, the Rhénan, Eifelian and Famennian are well developed. 1931Gregory & Barrett Gen. Stratigraphy 250 (table) Rhenan. |