单词 | anorthosite |
释义 | anorthositen. Min. A granular igneous rock composed mainly of a soda-lime feldspar. 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 1863 T. S. Hunt in Amer. Jrnl. Sci. 2nd Ser. XXXVI. 222 A series of strata characterized by a great development of anorthosites. 1863 T. S. Hunt in Amer. Jrnl. Sci. 2nd Ser. XXXVI. 224 These anorthosite rocks are often compact, but more frequently granitoid in structure. 1925 J. Joly Surface-hist. Earth iii. 47 These rocks..present to our view many varieties of structure and mineral composition; e.g. in the granites, gneisses, anorthosites, diorites. Derivatives anorthoˈsitic adj. of the nature of, or containing, anorthosite. ΚΠ 1939 Geogr. Jrnl. 94 104 A diorite..so altered by movement and pressure that it has acquired a foliated structure. They want to call it ‘anorthositic gneiss’. This entry has not yet been fully updated (first published 1933; most recently modified version published online November 2010). < n.1863 |
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