gneiss

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Related to Gneisses: Cambrian period, orthogneiss

gneiss

(nīs)

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.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

gneiss

(naɪs)

(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

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

gneiss

A coarse-grained metamorphic rock with minerals in wavy layers.

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Noun

gneiss - a laminated metamorphic rock similar to granite

metamorphic rock - rock altered by pressure and heat

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gneiss

[naɪs] N → gneis m

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

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References in periodicals archive ?

Rising up from the rolling hills of the Piedmont, the Blue Ridge forms the spine of the state, its hard basalt and gneisses on display at Shenandoah National Park.

Virginia Rocks!

It passes through porphyry granite and gneisses of Indian plate and then through ultra-mafics and mafics of Kohistan Island Arc.

INITIATION AND FAILURE MECHANISM OF ROCK FALLS ALONG THE KARAKORAM HIGHWAY (BESHAM-CHILAS SECTION)

The samples selected were gneisses, schists and amphibolites.

COMPARISON OF PETROPHYSICAL PROPERTIES OF PREDOMINANT ROCKS FROM THE ARCHAEAN SECTION OF THE KOLA SUPERDEEP (SG-3)

Among them are lessons from limestone: how to teach all sciences with limestone, karst hydrogeology of Tuckaleechee Cove and the western Great Smoky Mountains in Tennessee and North Carolina, quaternary faulting along the Dandridge-Vonore fault zone in the eastern Tennessee seismic zone, and the evolution of the Blue Ridge basement complex in the eastern Great Smoky Mountains: evidence from zircon uranium-lead geochronology and neodymium-lead isotope geochemistry of basement gneisses. ([umlaut] Ringgold, Inc., Portland, OR)

Geology at Every Scale: Field Excursions for the 2018 GSA Southeastern Section Meeting in Knoxville, Tennessee

The first deformational phase D1 has put in place the S1 foliation subhorizontal and is present only in the gneisses and amphibolites.

Hydrogeophysical Investigation for Groundwater Resources from Electrical Resistivity Tomography and Self-Potential Data in the Meiganga Area, Adamawa, Cameroon

Caption: The geological map of the Republic of Macedonia: (1) Neogene; (2) Volcanics; (3) Cretaceous; (4) Gabbros-diabasses; (5) Triassic; (6) Granitoids; (7) Palaeozoic; (8) Riphean-Cambrian; (9) Marbles; (10) Gneisses; (11) Faults; (12) SMM; (13) VZ; (14) PM; (15) WMZ

Geological explorations are required: there are 13 thousand people operating in the mining sector, 78 percent of the mining concessions flow into the state treasury

The Tet fault outcrops at the Llo thermal resort parking (Figure 7(a)) where gneisses are juxtaposed to metasediments and at the Thues-les-Bains train station (Figure 7(b)) where the fault zone juxtaposes gneiss against gneiss.

It's great fun to try to figure out rock identities even as the water-polished pebbles afford an endless variety of gneisses, granitic rocks, schists, shales, black mudstones, and white quartzite.

Stone stories--the rocks and pebbles of Lake Ontario's south shore

This group of rocks consists of three main lithologies: (i) a monotonous sequence of schists and quartz-schists; (ii) fine-grained gneisses with intercalations or boudins of schists and metabasites; and (iii) metabasites which, in the vicinity of the gneisses, contain boudins of fine-grained gneisses and schists.

Structure of the Andean Palaeozoic basement in the Chilean coast at 31[degrees] 30' S: geodynamic evolution of a subduction margin

Salamanca: La Fregeneda, the descent to Muelle de Vegaterron, the Valdaslajas road, banks of the River Agueda, 29TPF7541, 210 m, narrow crevices on highly insolated gneisses, 16.02.2013, Amich, Rico & Sanchez, SALA 146307; ibidem, 29TPF7541, 205 m, narrow fissures on highly insolated gneisses, 07.03.2014, Amich & Ramirez-Rodriguez, SALA 149926.

Notas sobre flora rara y amenazada en el centro occidente iberico

At Osprey West, thin quartz +calcite +chalcopyrite veins occur in hole OS13D02 within a succession of metasediments (gneisses, psammites, psammopelites).

Minotaur Exploration Limited (ASX:MEP) Initial Copper-Gold Drill Results for Osborne Project