| 释义 |
pre-glacial, a. Geol.|priːˈgleɪʃ(ɪ)əl|
[pre- B. 1 b.]
Existing or occurring previous to the glacial period. Hence preˈglacially adv.
1855,1863[see post-glacial]. 1863Q. Rev. CXIV. 407 Omitting the first or preglacial period, the estimate is made for the glacial and post-glacial period. 1875Q. Jrnl. Geol. Soc. XXXI. 61 The small thickness of preglacially weathered rock that the brief stay of the ice at these high elevations enabled it to remove. 1882Dawkins in Standard 25 Aug. 2/4 He..felt inclined to view the river⁓drift man as having invaded Europe in pre-glacial times. 1903Jrnl. Geol. XI. 675 To whatever state of maturity the valley development had attained preglacially, it was directly modified by the advent of the glacial epoch. 1963D. W. & E. E. Humphries tr. Termier's Erosion & Sedimentation 411 A smooth preglacially eroded surface. |