Tournaisianadj.
/tʊəˈneɪzɪən/ Geology.
Of, pertaining to, or designating the lower of the two divisions of the Lower Carboniferous (Dinantian) in Europe. Also absol.
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the world > the earth > structure of the earth > age or period > stratigraphic units > [adjective] > primary or Palaeozoic > carboniferous > specific
Bernician1856
seral1858
vespertine1858
Mississippian1891
Pennsylvanian1891
Westphalian1895
Stephanian1901
Viséan1905
Tournaisian1910
Namurian1915
1910 Rep. Brit. Assoc. Advancem. Sci. 1909 187 A minute exposition of the coral sequence in the Tournaisian.
1910 Rep. Brit. Assoc. Advancem. Sci. 1909 187 The Tournaisian Beds of this fine coast section.
1923 L. 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.
1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles ix. 187 The Tournaisian is..exposed in a continuous section in the gorge of the River Avon.
1969 G. M. Bennison & A. E. Wright Geol. Hist. Brit. Isles ix. 205 The Upper Old Red Sandstone may be in part of Tournaisian age.
This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018).
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adj.1910