| 单词 | cambridge greensand |
| 释义 | > as lemmasCambridge greensand Cambridge greensand Geology (see quot.) ΘΚΠ the world > the earth > minerals > mineral sources > [noun] > strata containing minerals fuller's eartha1350 fulling eartha1399 fulling clay1647 second bottom1787 iron pan1811 ledge1847 blue lead1854 oil shale1866 oil sand1875 Cambridge coprolite1881 Cambridge greensand1882 gem-bed1886 1882 A. Geikie Text-bk. Geol. 809 The so-called ‘Cambridge Greensand’—a bed about 1 foot thick lying at the base of the Chalk of Cambridge, and largely worked for phosphate of lime derived from coprolites and bones. < as lemmas |
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