单词 | Dyas |
释义 | Dyas Geol.|ˈdaɪæs| [a. Gr. δυάς: see dyad. After Trias.] A name for the Permian system.
1876Page Adv. Text-bk. Geol. xv. 273 The lower red sandstones and magnesian limestones—the Dyas or double group of German geologists. 1887Athenæum 29 Jan. 163/2 In the place of Murchison's term ‘Permian’..he follows continental geologists in using Marcou's rather awkward word ‘Dyas’. Hence Dyassic |daɪˈæsɪk|, a., Permian.
1878Lawrence tr. Cotta's Rocks Class. 105 Rocks belonging unmistakably to the Rothliegende or Dyassic age. |

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