单词 | pseudostratum |
释义 | > as lemmaspseudostratum pseudostratum n. Brit. /ˌs(j)uːdə(ʊ)ˈstrɑːtəm/ , /ˌs(j)uːdə(ʊ)ˈstreɪtəm/ , U.S. /ˌsudoʊˈstreɪdəm/ , /ˌsudoʊˈstrɑdəm/ , /ˌsudoʊˈstrædəm/ Geology a mass of rock resembling a stratum but produced by a process other than sedimentary deposition, e.g. in an igneous rock as a result of parallel fractures.ΚΠ 1845 J. Phillips & C. G. B. Daubeny Geol. in Encycl. Metrop. VI. 766/1 The great mass of basalt..lies in a pseudostratum of most irregular thickness. 1875 Q. Jrnl. Geol. Soc. 30 137 The interesting point about the apex of Arthur's Seat is..that its pseudo-strata are inclined at precisely the same angle as the intrusive sheets of Salisbury Craigs. 1974 Abstr. Ann. Meeting Amer. Assoc. Petroleum Geologists 1 47 At least five basic types of strata and pseudostrata can be recognized in modern dune sands. < as lemmas |
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