单词 | Aalenian |
释义 | Aalenian, a. Geol.|ɑːˈlɛnɪən| [ad. F. aalenien (C. D. W. Mayer-Eymar 1864, in Tableau Synchronistique des Terrains Jurassiques (Zurich)), f. Aalen, name of a town in Baden-Württemberg, W. Germany: see -ian.] Of, pertaining to, or designating a European stage at the bottom of the Middle Jurassic (or the top of the Lower Jurassic), next below the Bajocian; (see also quot. 1982). Also absol.
1896Q. Jrnl. Geol. Soc. LII. 708 (heading) The strata of Aalenian age. 1903[see Pliensbachian a.]. 1957Encycl. Brit. XIII. 195/1 The Aalenian includes at the base the upper part both of the Bridport Sands of Dorset, and of the Northampton Sands. 1963D. W. & E. E. Humphries tr. Termier's Erosion & Sedimentation xvi. 331 The Aalenian limestone..has an irregular surface whose hollows have been filled with ‘paper’ shale. 1982W. B. Harland et al. Geologic Time Scale ii. 27/2 Some workers have regarded Aalenian as Early Bajocian in a three-fold division... We have accepted Aalenian as a distinct age. |

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