| 释义 |
Gotlandian, Gothlandian, a. Geol.|gɒt-, gɒθˈlændɪən|
[ad. F. gothlandien (A. de Lapparent Traité de Géol. (ed. 3, 1893) II. ii. ii. 748), f. Got-, Gothland, name of an island in the Baltic + -ian.]
Of or pertaining to the geological system between the Ordovician and the Devonian or to the geological period during which it was deposited. Also absol. Cf. Silurian a. and n.1 2.
1909Cent. Dict. Suppl. I, Gothlandian, noting the upper⁓most division of the Silurian system of Murchison. 1914Proc. Geol. Assoc. XXV. 213 In northern Gotland reef⁓formations play a predominant part at certain horizons of both lower and upper Gotlandian age. 1955G. G. Woodford tr. Gignoux's Stratigr. Geol. iii. 87 At the beginning of the Gothlandian, the shaly facies seem to have invaded several domains. Ibid. 99 At the present time, many British geologists prefer not to use the term Gothlandian, which they deem not precise enough. They replace it by that of Silurian, used in a restricted sense. |