gneiss


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gneiss

 (nīs)
n.
A banded or foliated metamorphic rock, usually of the same composition as granite.

[German Gneis, probably alteration of Middle High German ganeist, spark (from its appearance), from Old High German gneista.]

gneiss′ic (nī′sĭk), gneiss′oid′ (nī′soid′), gneiss′ose′ (nī′sōs′) adj.

gneiss

(naɪs)
n
(Geological Science) any coarse-grained metamorphic rock that is banded and foliated: represents the last stage in the metamorphism of rocks before melting
[C18: from German Gneis, probably from Middle High German ganeist spark; related to Old Norse gneista to give off sparks]
ˈgneissic, ˈgneissoid, ˈgneissose, gneiˈssitic adj

gneiss

(naɪs)

n.
a metamorphic rock, generally made up of bands that differ in color and composition, some bands being rich in feldspar and quartz, others rich in hornblende or mica.
[1750–60; < German Gneis, ultimately derivative of Old High German gneisto spark]
gneiss′ic, gneiss′oid, adj.

gneiss

(nīs)
A type of metamorphic rock consisting of light-colored layers, usually of quartz and feldspar, alternating with dark-colored layers of other minerals. The layers are often folded into curves. See Table at rock.

gneiss

A coarse-grained metamorphic rock with minerals in wavy layers.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.gneiss - a laminated metamorphic rock similar to granite
metamorphic rock - rock altered by pressure and heat
Translations
rula
gnejs
gneiss
gneissi
gnajs
gnejs
gnejs

gneiss

[naɪs] Ngneis m

gneiss

nGneis m
References in periodicals archive ?
Gneiss types vary with the parent rock from which they formed originally, and there are many grades of gneiss.
Something about all those fives resonated with our ideas of the Founding Fathers and the gleaming white obelisk, whose tripartite nature -- marble, granite and bluestone gneiss -- seemed to speak of harmony, symmetry, and perhaps a bit of mystery.
The acoustopolarigrams of gneiss, schist and amphibolite cubic samples from the Kola superdeep section (5893-9672 m depth range) with a high level of elastic anisotropy are presented in Figure 4.
Washington, May 30 ( ANI ): A researcher spent the better part of three years collecting and studying ancient rock samples from the Acasta Gneiss Complex in the Northwest Territories to understand the environment in which they formed.
Whole-rock geochemical and Nd isotopic data from representative components of these units in the Kellys Mountain area, the Glen Tosh formation and Kellys Mountain Gneiss, show strong similarity.
Origin and evolution of Precambrian high-grade gneiss terranes, with special emphasis on the Limpopo complex of Southern Africa.
From the Morton Gneiss (once believed to be the oldest rock on Earth), to the St.
Garnetiferous Sillimanite, Graphite Gneisse and Garnetbiotite Gneiss are the two major groups identified in this area.
These include wood from Nova Scotia's Bluenose II schooner, copper from the Library of Parliament roof, a piece of four-billion-year-old Acasta gneiss rock from Great Bear Lake, and more.
The age of granulite metamorphism is difficult to estimate directly, however monazite from Estonian orthopyroxene-garnet gneiss (drill core F-300) yielded the age of 1.
Silicate rocks used in this experiment were basalt, dolerite, gneiss, and K-feldspar from Bunbury, Jarrahdale, Northam, and Fort Hedland, Western Australia (WA), respectively.
It is a large central-type intrusion emplaced in pre-existing biotite-plagioclase gneiss and granite-gneiss about 380 million years ago.