单词 | micrite |
释义 | micriten. Geology. Microcrystalline calcite present as a matrix material or an interstitial constituent in some kinds of limestone; a limestone consisting chiefly of this. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > limestone > others lias1404 stone marrow1681 stone marl1682 saint's head stone1763 Kentish rag1769 watericle1776 kankar1793 Cotham1816 mountain limestone1817 tosca1818 cornstone1819 burr1829 coral-limestone1831 scar-limestone1831 Wenlock limestone1834 bavin1839 curf1839 Solenhofen slate1841 Beer stone1871 miliolite limestone1872 Clipsham1877 reef limestone1884 Hopton wood1888 thermo-calcite1888 Kilkenny marble1930 micrite1959 the world > the earth > minerals > types of mineral > carbonates > [noun] > hexagonal > calcite > varieties alabasterc1384 agarica1400 alabastrites1582 alabastrite1592 Iceland crystal1673 agaric mineral1728 milk of the moon1728 Iceland spar1771 argentine1795 rock milk1804 slate-spar1804 schieferspar1807 calc-spar1822 wonderstone1824 manganocalcite1852 neotype1854 hislopite1859 aphrite1868 thinolite1879 moonmilk1885 vaterite1913 micrite1959 1959 R. L. Folk in Bull. Amer. Assoc. Petroleum Geologists 43 17 Finally, it was decided to use a composite word, the first part of which refers to the allochem composition...Whether the rock is type I or type II is shown by the second part of the name ‘-sparite’ for those with sparry calcite cement and ‘-micrite’ (pronounced ‘mick-rite’) for those with microcrystalline ooze matrix... Type III limestones, almost entirely ooze, are designated simply as ‘micrite’ without any allochem prefix. 1970 K. C. Jackson Textbk. Lithol. vi. 401 The proportion of micrite in limestone varies from a minor interstitial filling between allochems to the entire rock. 1973 Nature 2 Mar. 41/2 The patch reef, 13 m long and over 2 m high, tongues out to the west into 2 m of thinly bedded calcitic micrites of quiet water origin. 1991 Sea Frontiers Feb. 38/3 The gray cements are made of a more uniform microcrystalline calcium carbonate called micrite. The micrite cements are unorganized masses of interwoven, poorly defined crystals. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1959 |
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