| 单词 | hercynian gneiss |
| 释义 | > as lemmasHercynian gneiss a. Designating one of the Devonian formations of the Harz Mountains; so Hercynian fauna (after Kayser, 1879), Hercynian gneiss (after Gümbel, 1868). ΘΚΠ the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic > Devonian > specific Helderberg1840 Coblenzian1853 Rhenan1853 Vergent1858 hercynian1880 Famennian1882 Frasnian1882 Givetian1882 Helderbergian1906 Siegenian1922 1880 J. D. Dana Man. Geol. (ed. 3) iii. i. 151 In Europe, the Archæan system has been distinctly recognized in..Bavaria (Hercynian and Bojie Gneiss). 1885 A. Geikie Text-bk. Geol. (ed. 2) 641 Grey gneiss, containing white or grey felspar, and abundant dark magnesia-mica..(termed the Hercynian gneiss). 1893 P. Lake tr. E. Kayser Text Bk. Compar. Geol. ii. 101 First described by H. Römer and Giebel as Silurian, this Hercynian fauna of the Lower Harz has more recently been compared by E. Beyrich with the fauna of the Bohemian stages F, G, H of Barrande, and was afterwards described by Kayser..as Lower Devonian. 1895 J. D. Dana Man. Geol. (ed. 4) iv. ii. 570 Kayser concluded..that the Lower Helderberg formation of America was Hercynian, that is, lowest Devonian. 1906 T. C. Chamberlin & R. D. Salisbury Geol. II. viii. 450 The Hercynian fauna which characterizes this stage of the Devonian in southern Europe has much in common with the Helderberg fauna of America. 1955 G. G. Woodford tr. M. Gignoux Stratigr. Geol. iv. 128 The Hercynian facies of the Lower Devonian appears in the Kellerwald. < as lemmas |
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