单词 | aplite |
释义 | apliten. Geology. An igneous rock with a homogeneous fine- or medium-grained texture consisting predominantly of alkaline feldspar and quartz, typically pale in colour and most commonly found in dykes and veins in association with granite. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > other igneous clay-stone1777 variolite1781 pyroxenite1845 aplite1862 anorthosite1863 teschenite1866 yellow ground1883 kimberlite1887 sanidinite1887 websterite1890 essexite1891 monzonite1895 missourite1896 theralite1898 heronite1899 kentallenite1900 carbonatite1924 wonderstone1936 1862 J. B. Jukes Student's Man. Geol. (new ed.) iv. 90 Hälleflinta and Aplite are names given by Naumann for rocks of similar character to elvans. 1879 F. Rutley Study of Rocks xii. 211 Aplite or haplite..also termed semi-granite or granitell, is a rock..consisting of a crystalline-granular admixture of felspar and quartz. 1903–4 Proc. Acad. Nat. Sci. Philadelphia 1903 55 400 Seams of quartz and feldspar (haplite) alternate with seams of biotite and feldspar. 1923 Nature 21 July 117/2 The well-known aplite from Meldon in Devonshire. 1965 G. J. Williams Econ. Geol. N.Z. xii. 181/2 Pegmatites, and possibly aplites, are also represented and several large quartz lodes. 2006 Jrnl. S. Amer. Earth Sci. 20 342/1 Pegmatites, aplites, and, in some cases, quartz porphyries and rhyolites are related to the plutons. This entry has been updated (OED Third Edition, December 2013; most recently modified version published online December 2021). < n.1862 |
随便看 |
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。