| 单词 |
interpluvial |
| 释义 |
interpluvial, a. and n.|ɪntəˈpluːvɪəl|
[f. inter- 4 b + pluvial a.]
A. adj. Designating any of the periods of generally drier conditions in equatorial latitudes during the geological past (esp. the Pleistocene) which alternated with pluvial periods in a cycle which may be correlated with or related to the better-known cycle of interglacial and glacial periods in more polar latitudes.
B. n. An interpluvial period.
1907Bull. Geol. Soc. Amer. XVIII. 362 The time when a thesis occurs is a thesial epoch, which may be described as interglacial, or interfluvial, and so forth, when the agents which modify the earth's surface are considered, or as intervegetal, interpluvial, and so forth, when other phases are considered. 1931L. S. B. Leakey Stone Age Cultures Kenya Colony ii. 13 During the dry inter-pluvial periods..the lakes in the Rift Valley dried up. Ibid., One would expect that the prehistoric tribes moved to the high land..during the inter-pluvials. 1940Geogr. Jrnl. XCVI. 333 There have been very long wet and dry phases, the so-called pluvials and interpluvials. 1957G. E. Hutchinson Treat. Limnol. I. i. 133 Such deposits are supposed to be the result of water-borne material, washed toward the pan in pluvial times, becoming cemented during the following interpluvial. Ibid., Interpluvial periods of deflation. 1963D. W. & E. E. Humphries tr. Termier's Erosion & Sedimentation i. 9 In Equatorial Zones it is now suspected that the pluvial phases were hot times and interpluvial (dry) phases were equivalent to the glacial epochs. 1973Nature 16 Mar. 187/1 It seems..that the tectonic movement which caused the tilting of the Ubeidiya Formation occurred some time within the Mindel-Riss Interpluvial and is younger than 640,000 yr. |
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