| 单词 | basement rock |
| 释义 | > as lemmasbasement rock C3. Geology. In sense 3, as basement complex, basement rock, etc. ΘΚΠ the world > the earth > structure of the earth > [noun] > fundamental complex basement complex1887 fundamental complex1890 basal complex1897 1842 G. F. Richardson Geol. for Beginners vi. 240 The granite..forming the basement-rock on which all the others repose. 1882 Nature 7 Dec. 122/2 Above these basement strata come more and more crystalline schists,..foliated rocks of many varieties, and true gneisses. 1887 Amer. Jrnl. Sci. 134 259 In each region we start with a great basement complex of crystalline schists, gneiss and granite. 1923 Geogr. Jrnl. 62 24 These Eocene marlstones are an outcrop of the basement rocks of Great Kei. 1956 W. Edwards in D. L. Linton Sheffield 16 The Rhaetic..is..the basement bed of the Lias in this part of Britain. 2000 R. L. Hopkins & L. B. Hopkins Hiking Colorado's Geol. x. 193 The trail..winds its way over rounded, deeply weathered outcrops of Precambrian basement rock. < as lemmas |
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