| 释义 |
Tournaisian, a. Geol.|tʊəˈneɪzɪən|
[ad. Fr. tournaisien of Tournai: see prec., -ian.]
Of, pertaining to, or designating the lower of the two divisions of the Lower Carboniferous (Dinantian) in Europe. Also absol.
1910Rep. Brit. Assoc. Adv. Sci. 1909 187 A minute exposition of the coral sequence in the Tournaisian. Ibid., The Tournaisian Beds of this fine coast section. 1923L. D. Stamp Introd. Stratigr. ix. 129 The lower three zones constitute the Tournaisian or Lower Carboniferous Limestone, the upper zones the Visean or Upper Carboniferous Limestone. 1969Bennison & Wright Geol. Hist. Brit. Isles ix. 187 The Tournaisian is..exposed in a continuous section in the gorge of the River Avon. Ibid. 205 The Upper Old Red Sandstone may be in part of Tournaisian age. |