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2025-07-21

“Frasnian”的英英意思

单词 Frasnian
释义 Frasnian, a. Geol.|ˈfræznɪən|
Formerly also -ien.
[ad. F. Frasnien (J. Gosselet 1879, in Ann. Soc. géol. du Nord VI. 396), f. Frasne, var. Frasnes, name of a village and commune in southern Belgium.]
Name of the lower of the two stages constituting the Upper Devonian in Europe; of or pertaining to this stage or the geological period during which it was deposited. Also absol.
1882A. Geikie Text-bk Geol. 701 In the Belgian and Eifelian tracts they have been subdivided as under:..Fammenien..Frasnien.1894Geol. Mag. Oct. 474 The Frasnien series in the North of France and Belgium.1963D. W. & E. E. Humphries tr. Termier's Erosion & Sedimentation xiii. 288 The Frasnian reefs on the edge of the Dinant basin.Ibid. 289 The bioherms of the Frasnian form a subsidising series up to 1,300 feet thick.
“Frasnian”的英英意思

 

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