| 释义 |
erosional, a.|ɪˈrəʊʒənəl|
[f. erosion: see -al.]
Caused by erosion.
1903Science 2 Jan. 26/2 The terraced character of the outlet at Horseheads was also described, and the opinion expressed that the broader terrace is an erosional and not a constructional..feature. 1947Endeavour V. 43 That stratified rocks are the sands and muds of bygone ages and have been thus formed out of the erosional debris of pre-existing land masses began to be appreciated at the end of the eighteenth century. 1963D. W. & E. E. Humphries tr. Termier's Erosion & Sedimentation i. 17 Heavy erosional phases represented by conglomeratic deposits of ‘molasse’ type. 1969Nature 11 Oct. 164/1 Such streams are usually associated with extensive flood-plains leading out from upland V-shaped erosional valleys. |