| 释义 |
gneiss Geol.|naɪs, gnaɪs|
Also 8 kneiss.
[a. Ger. gneiss, kneis.]
A metamorphic rock, composed, like granite, of quartz, feldspar or orthoclase, and mica, but distinguished from it by its foliated or laminated structure.
1757tr. Henckel's Pyritol. 44 Shiver, kneiss [Note. A black, fatty sort of vein stone or rock], ochre, jasper. 1777R. E. Raspe tr. Born's Trav. Temeswar viii. 42 Gneiss..covered the whole country. 1851Richardson Geol. (1855) 127 Gneiss may be termed stratified, or slaty granite... When the gneiss is associated with granite, it approaches to the character of that substance; and when the two come in contact, it is scarcely possible to distinguish between them. 1873Black Pr. Thule i. (1875) 3 Great grey boulders of gneiss fixed fast into the black peat-moss.
attrib.1845Darwin Voy. Nat. ii. (1890) 30 The formation which Humboldt designates as gneiss-granite. 1854H. Miller Sch. & Schm. v. 95 The tract though a primary one forms one of the tamer gneiss districts of Scotland. |