| 词汇 | glaciation |
| 释义 | glaciation noun[ U ] uk /ˌɡleɪ.siˈeɪ.ʃən/ us /ˌɡleɪ.siˈeɪ.ʃən/ the forming, existence, or movement of glaciers over the surface of the earth: 冰河作用（地球表面的冰河形成、存在和移动） This landscape shows many clear features of glaciation.这里的景观有很多明显的冰河作用的特征。 Precipitation: snow & ice anti-icing avalanche be snowed inidiom be snowed upidiom boilerplate drifting glacier hailstorm iceberg icy permafrost precipitation sleet slushy snow devil snow line snowdrift snowfall snowflake generation snowpack Examples of glaciationglaciation The current landscapes were finally remodelled into their present forms during the last glaciation, which ended some 10,000 years ago. This allochthonous tillite is no less indicative of contemporary glaciation. The next five chapters of the book look into links between climate and orbital change, and then come three on glaciation. In the course of several glaciation episodes, abundant rainfall submerged the various landforms and gave origin to a massive lake. As already noted, low-latitude glaciation implies widespread refrigeration and so increases confidence in correlating tillites that otherwise need not be considered as coeval. Any model attempting to account for the cause, global extent, and duration of glaciation must be consistent with the boundary conditions imposed by these data. The text in each contribution follows a broadly similar structure, describing the evidence for glaciation from oldest to youngest. This simple model may be an adequate explanation of the vexing relationship between the onset of glaciations and apparently closely synchronous episodes of explosive volcanism. Earth history includes several periods of essentially total glaciation. The record of the oceans leading up to glaciation is more difficult to construct due to common erosional truncation of sub-glacial strata. In chapter six the author writes of glaciers and glaciation, moving on to glacial erosion and deposition. So only at the margins of an ice sheet would the fluctuating sedimentary record be preserved, whereas interior glaciation might compound tills in final deposits of boulder clay. Soils of temperate regions do not generally reach this later stage of soil development, as glaciation has periodically reset the clock of soil development to initial stages. The bay is fringed by cliffs rising about 30 m above the sea and consisting for the most part of moraine left behind by receding glaciers of the last glaciation. Albedo feedback accounts for the orbital glaciation and deglaciation being rapid. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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