| 释义 |
cwm Geol.|kuːm|
[Welsh cwm (cf. coomb2).]
A valley; in Phys. Geogr., a bowl-shaped hollow partly enclosed by steep walls lying at the head of a valley or on a mountain slope and formed originally by a glacier; a cirque.
1853Mrs. Gaskell Ruth I. vii. 170 Some ‘Cwm’, or hollow. 1882Geikie Text-bk. Geol. iii. ii. ii. 407 Several hundred feet below, in the corrie or cwm at the bottom, lies the re-cemented glacier. 1933Geogr. Jrnl. LXXXII. 202 The snow-patches are cwm-ice masses occupying deep scallops in an elevated position of the old erosion-surface. 1936Nature 19 Dec. 1041/2 Its glaciers..widened their heads into cwms and gave to the basin its only fiord. 1951Times 27 Nov. 5/7 While ‘cwm’ may occur..purely as a place-name..technically the word is restricted to the huge cauldron-shaped hollows found high up on heavily glaciated slopes. 1953J. Hunt Ascent of Everest ii. 14 When Mallory saw it..in 1921, he named it the ‘Western Cwm’. 1957G. E. Hutchinson Treat. Limnol. I. i. 59 Such amphitheaters are called cirques in the French-speaking parts of the Alps, Kars in the German-speaking regions, cwms in Wales, and corries in Scotland. All four terms have achieved some degree of international usage, but the first seems to have been the most widely employed. |