| 单词 | rock marl |
| 释义 | > as lemmasrock marl rock marl n. Geology (now chiefly historical) marl that has become hardened by lime or other minerals deposited by percolating water. ΘΚΠ the world > the earth > structure of the earth > constituent materials > earth or soil > kind of earth or soil > [noun] > marl > other marls pigeon marl1601 paper-marl1707 toad-marl1764 rock marl1772 earth-marl1803 wichert1912 1772 J. Rutty Ess. Nat. Hist. Dublin II. 83 A kind of Rock-Marl, or a Petrification resembling an artificial Plaister. 1876 D. Page Adv. Text-bk. Geol. (ed. 6) xx. 411 Where solidified by the subsequent percolation of calcareous waters, it is known as rock-marl. 2000 T. C. Smout Nature Contested iii. 73 A third [farmer] recommended 450–600 cart-loads of clay or rock marl per acre. < as lemmas |
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