theraliten.

/ˈθɪərəlʌɪt/

Etymology: < German theralith (H. Rosenbusch Mikrosk. Physiogr. (ed. 2, 1887) II. 248), < Greek θηρᾶν to hunt, pursue: see -lite comb. form¹, -lith comb. form.

Geology.

Any of a group of mafic, intrusive, igneous rocks that contain nepheline and calcic plagioclase.

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

1898 Bull. U.S. Geol. Surv. No. 150. 197 This feldspar was determined as in part ordinary sanidine, in part a soda-lime feldspar, and the rocks were therefore made the types of a plutonic rock characterized by the mineral combination nephelite, soda-lime feldspar, and named theralite by Professor Rosenbusch.

1938 A. Johannsen Descr. Petrogr. Igneous Rocks IV. 222 Among rocks difficult to place are the shonkinites, theralites, and teschenites. On the basis of their limited extent and mode of occurrence as sills, small intruded masses, and border facies, the rocks are hypabyssal; on the character of their usual textures, they are plutonic.

1978 S. R. Nockolds in S. R. Nockolds et al. Petrol. for Students xvi. 177 Theralites appear to be rather rare but occur, for instance, as dykes cutting nepheline syenite in the Khibina complex, Kola Peninsula, U.S.S.R... Theralites are found also in the Lugar sill, Ayrshire.

This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018).

单词	theralite
释义	theraliten. /ˈθɪərəlʌɪt/ Etymology: < German theralith (H. Rosenbusch Mikrosk. Physiogr. (ed. 2, 1887) II. 248), < Greek θηρᾶν to hunt, pursue: see -lite comb. form¹, -lith comb. form. Geology. Any of a group of mafic, intrusive, igneous rocks that contain nepheline and calcic plagioclase. 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 1898 Bull. U.S. Geol. Surv. No. 150. 197 This feldspar was determined as in part ordinary sanidine, in part a soda-lime feldspar, and the rocks were therefore made the types of a plutonic rock characterized by the mineral combination nephelite, soda-lime feldspar, and named theralite by Professor Rosenbusch. 1938 A. Johannsen Descr. Petrogr. Igneous Rocks IV. 222 Among rocks difficult to place are the shonkinites, theralites, and teschenites. On the basis of their limited extent and mode of occurrence as sills, small intruded masses, and border facies, the rocks are hypabyssal; on the character of their usual textures, they are plutonic. 1978 S. R. Nockolds in S. R. Nockolds et al. Petrol. for Students xvi. 177 Theralites appear to be rather rare but occur, for instance, as dykes cutting nepheline syenite in the Khibina complex, Kola Peninsula, U.S.S.R... Theralites are found also in the Lugar sill, Ayrshire. This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018). < n.1898
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