单词 | mylonite |
释义 | myloniten. Geology. A schist, esp. a banded one, resulting from the grinding or crushing of rocks. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > metamorphic rock > [noun] > schist > varieties of hammochrysos1706 hornslate1791 hornblende slate1794 horn porphyry1794 horn-schist1799 mica-slate1809 green schist1817 hornblende schist1821 kinzigite1878 phyllite1878 spilosite1882 mylonite1885 1885 C. Lapworth in Nature 8 Oct. 559/1 The gneisses and pegmatites..are crushed, dragged, and ground out into a finely-laminated schist (Mylonite, Gr. mylon, a mill). 1940 F. F. Grout Kemp's Handbk. Rocks (ed. 6) x. 236 Mylonites are granulated at such depths that they do not lose coherence as breccias do. 1965 Economist 10 July 157/2 This was merely a curtain raiser to..the 165 days spent digging out a 788-ft zone of crumbling mylonite by hand. 1991 New Scientist 13 Apr. 26/3 Mylonites are tough, banded, fine-grained rocks that geologists had associated with fault zones for more than a hundred years. This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022). < n.1885 |
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