| 释义 |
Skiddaw Geol.|ˈskɪdɔː|
The name of a mountain in the English Lake District, used attrib.: (a) in Skiddaw slate(s) (or Slate(s)), a thick group of slates, flags, and mudstones that outcrops in the northern part of the Lake District and out of which Skiddaw and neighbouring mountains have been eroded; (b) to designate the lowest division of the Ordovician in Britain, esp. in the Lake District.
1832Proc. Geol. Soc. I. 401 Skiddaw slate.—The author briefly describes the range and extent of this group. 1855J. Phillips Man. Geol. vi. 108 These..occupy a long range of mountains parallel to the Skiddaw slates. 1897Index Vols. I.–L. Q. Jrnl. Geol. Soc. 357/1 Skiddaw age of Easdale Slates. 1900Proc. & Trans. R. Soc. Canada VI. iv. 200 There is a remarkable similarity between the Ordovician of..Quebec and New Brunswick and the Ordovician of western Europe as developed in Great Britain: The Skiddaw and Arenig, the Hartfell and Llandeilo formations, being easily recognized in Canada. 1933H. H. Symonds Walking in Lake District x. 255 Thus came the ‘Skiddaw slate’, that earliest rock of Cumberland, found par excellence in Skiddaw himself. 1969Bennison & Wright Geol. Hist. Brit. Isles v. 102 The Skiddaw Slates have been slightly metamorphosed..by later intrusions... However, the early Ordovician seems to have been devoid of igneous activity—unlike Wales—and only late in Skiddaw times did it commence. 1977R. Prosser Geol. explained in Lake District i. 13 The oldest rocks [of the Lake District massif], the Skiddaw Slates.., have their main exposures north of a line from Ennerdale Water, past Derwentwater to Troutbeck and include the hill masses of the Skiddaw range. |