| 释义 |
Viséan, a. Geol.|vɪˈzeɪən|
Also Visean.
[ad. F. viséen (E. F. Dupont 1883, in Bull. de l' Acad. R. des Sci., etc., de Belgique V. 223), f. Visé, name of a town in Belgium: see -an.]
Of, pertaining to, or designating the upper of the two divisions of the Lower Carboniferous (Dinantian) in Europe. Also absol.
1905Q. Jrnl. Geol. Soc. LXI. 264 If I am correct in correlating the Lower Viséan of the Belgian Geological Survey with the Syringothyris-Zone of the Bristol area, the terms Tournaisian and Viséan, as employed by me in this paper, do not bear their original connotation. Ibid. 265 The Tournaisian and Viséan facies are essentially distinct. 1956W. Edwards in D. L. Linton Sheffield 22 The imposing scarp along the north side of the outcrop at Castleton, with its reef-aprons..referred to movements of the Derbyshire ‘massif’ in relation to the ‘basin’ north of it, during Visean times. 1969Bennison & Wright Geol. Hist. Brit. Isles ix. 207 Goniatites have shown that only the Lower Limestone Group belongs to the Viséan. 1983Rep. Inst. Geol. Sci. No. 82/12. 1/1 The Carboniferous rocks [exposed at Benburb, County Tyrone] fall within the Viséan Series of the Dinantian. |