单词 | palaeocurrent |
释义 | > as lemmaspalaeocurrent palaeocurrent n. Brit. /ˈpalɪə(ʊ)kʌrənt/ , /ˈpalɪə(ʊ)kʌrn̩t/ , /ˈpeɪlɪə(ʊ)kʌrənt/ , /ˈpeɪlɪə(ʊ)kʌrn̩t/ , U.S. /ˈpeɪlioʊˌkərənt/ Geology a current, usually of water, which existed at some time in the past, as inferred from the features of sedimentary rocks.ΘΚΠ the world > the earth > water > flow or flowing > current > [noun] currentc1380 veina1500 ford1563 tide1585 vein1600 draught1601 currency1758 stream-currenta1830 palaeocurrent1955 1955 Bull. Geol. Soc. Amer. 66 1606 (heading) Paleocurrents of Lake Superior Precambrian quartzites. 1971 Nature 28 May 245/2 A W.N.W. to N. palaeocurrent component predominates in the channel sandstones with pedogenic modification..occurring on most proximal floodplain deposits. 1987 R. L. Ciochon & A. B. Chiarelli in R. L. Ciochon & J. G. Fleagle Primate Evol. & Human Origins xv. 114 These patterns of paleocurrent flow in the Caribbean would argue strongly against rafting as a means of dispersal between preexisting volcanic island arcs. < as lemmas |
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