| 释义 |
Givetian, a. Geol.|ʒɪˈviːʃən, -eɪʃən|
[ad. F. Givétien (J. Gosselet 1879, in Ann. de la Soc. géol. du Nord VI. 130), f. Givet, name of a commune in north-eastern France: see -ian. The Fr. spelling was formerly in English use.]
Name of the upper one of the two stages that constitute the Middle Devonian in Europe; of or pertaining to this stage or the geological period during which it was deposited. Also absol.
1882A. Geikie Textbk. Geol. vi. 702/1 Givetien. The great limestone of the middle Devonian series, well seen at Givet. 1902A. J. Jukes-Browne Student's Handbk. Stratigr. Geol. x. 176 [In the Belgian Ardennes] the upper stage of the Middle Devonian is a massive limestone 1300 feet thick, and is well seen at Givet on the Meuse, whence it is known as the Givétien [ed. 2, Givetian]. 1931Gregory & Barrett Gen. Stratigr. vi. 96 In central Russia the Eifelian is also absent, but the Givetian is represented by marls and limestones. 1967Teichert & Yochelson Essays in Paleont. & Stratigr. 184, 15 genera from the Eifelian and only ten genera from the Givetian Stage. 1967D. H. Rayner Stratigr. Brit. Isles v. 161 Near Padstow the Middle Devonian is represented by grey slates with Eifelian and Givetian goniatites. |