| 释义 |
‖ sandr, sandur Physical Geogr.|ˈsændør, ˈsændə(r)|
Pl. sandar; also sandr, sandrs, sandurs.
[a. older Icel. sandr (pl. sandar) sand n.2 In mod. Icel. the sing. is spelt sandur.]
A broad, flat or gently sloping, sheet of glacial outwash.
1893Proc. Boston Soc. Nat. Hist. XXVI. 172 This would lend much support to the theory that the sand and gravel plains of the Cape, of Long Island, and of the outlying islands, are to be regarded as confluent fan-deltas built up by streams issuing from the ice sheet, at times when its edge lay along the northern margin of the plains. They are therefore homologous with the sandr of Greenland,..and the gravel fans of Alaska. 1899Geogr. Jrnl. XIII. 299 Here they [sc. glacial streams] cover vast areas with gravelly or sandy deposits, the equivalent of the ‘sandr’ of Iceland. 1937W. B. Wright Quaternary Ice Age x. 138 The outer moraine is distinguished from the inner by its great development of sandr or outwash sand plains. The inner moraine here lacks the sandr altogether. 1946F. E. Zeuner Dating Past v. 113 Analysis of the zones of moraines and sandrs of the Scandinavian Glaciation confirmed that there were at least three major glaciations. 1969J. L. Davies Landforms Cold Climates xi. 180 The Icelandic sandurs have an overall gradient of about 1 : 200 to 1 : 250. 1976H. M. French Periglacial Environment viii. 177 Periglacial sandar are particularly well developed in the broad valleys which drain towards the Beaufort Sea in the western Arctic. |