| 单词 | cambridge coprolite |
| 释义 | > as lemmasCambridge coprolite Cambridge coprolite n. (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 1881 Spons' Encycl. Industr. Arts IV. 1260 The most valuable beds of the mineral in this country are in the Upper Greensand formation, lying chiefly in Cambridgeshire, and merging into Buckinghamshire. These are known as ‘Cambridge’ coprolites. < as lemmas |
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