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See all on Wikipediahttps://en.wikipedia.org/wiki/GneissGneiss is a common and widely distributed type of metamorphic rock. It is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. Gneiss forms at higher temperatures and pressures than schist. Gneiss nearly always … See more
In traditional English and North American usage, a gneiss is a coarse-grained metamorphic rock showing compositional banding (gneissic banding) but poorly developed schistosity and indistinct cleavage. … See more
The word gneiss has been used in English since at least 1757. It is borrowed from the German word Gneis, formerly also spelled Gneiss, which is probably derived from the Middle High German noun … See more
Gneisses are characteristic of areas of regional metamorphism that reaches the middle amphibolite to granulite metamorphic facies. In other words, the rock was metamorphosed at a temperature in excess of 600 °C (1,112 °F) at pressures between about 2 to 24 See more
Gneiss has been used as a building material, such as the Facoidal gneiss, used extensively in Rio de Janeiro. Gneiss has also been used as construction aggregate for asphalt pavement. See more
• "Gneiss" . Encyclopædia Britannica (11th ed.). 1911.
• "Gneiss" . New International Encyclopedia. 1906. See moreWikipedia text under CC-BY-SA license- https://simple.wikipedia.org/wiki/Gneiss
Gneiss is a type of metamorphic rock. The minerals in gneiss may come from rocks which were originally either igneous or sedimentary. They were heated and squeezed, and the minerals …
- https://fr.wikipedia.org/wiki/Gneiss
Le gneiss ([gnɛs]) est une roche métamorphique de la croûte continentale contenant du quartz, du mica, des feldspaths plagioclases et parfois du feldspath alcalin, tous suffisamment gros pour être identifiés à l'œil nu.
La foliation, toujours présente mais parfois peu visible à l'œil nu, est marquée par l'alternance de petits lits clairs (blancs, gris, rosés) formés de quartz et de f…Wikipedia · Text under CC-BY-SA license- Catégorie: roche métamorphique
- Texture: foliée
- Couleur: variable, souvent grise
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- https://it.wikipedia.org/wiki/GneissSee more on it.wikipedia.orgLa struttura, a seconda dei minerali che li costituiscono viene chiamata: struttura granoblastica quando il litotipo è composto da quarzo e feldspati; struttura lepidoblastica quando è composto da miche; viene chiamata struttura nematoblastica quando contiene anfiboli o pirosseni; viene chiamata struttura pe…
- Categoria: Roccia metamorfica
- Facies: diverse
- Metamorfismo: regionale
- https://en.wikipedia.org/wiki/Morton_Gneiss
- Morton gneiss, also known as rainbow gneiss, is an Archean-age gneiss found in the Minnesota River Valley of southwestern Minnesota, United States. It is one of the oldest stones on Earth, at about 3.5 billion years old. Along with the nearby Montevideo Gneiss, it is the oldest intact continental crust rock in the United States. Its type locality i...
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- https://es.wikipedia.org/wiki/Gneis
Se denomina gneis a una roca metamórfica compuesta por los mismos minerales que el granito pero con orientación definida en bandas, con capas alternas de minerales claros y oscuros. A …
- https://commons.wikimedia.org/wiki/Category:Gneiss
Gneiss is a medium to coarse-grained banded rock formed as a result of high grade regional metamorphism. It is characterised by a layered appearance caused by the minerals from …
- https://et.wikipedia.org/wiki/Gneiss
Gneiss on regionaalse moonde kivim. See sisaldab enamasti peamiselt kvartsi ja päevakivi, kuid koostis ei ole gneisi määramisel põhiline. Gneisile on olemuslikud moondeaste ja gneisiline …
- https://ro.wikipedia.org/wiki/Gnais
Gnais ( germană Gneis) este o rocă metamorfică ce a suferit transformări importante, roca inițială fiind supusă la presiuni și temperaturi ridicate. Gnaisul este alcătuit în proporții mai mari din …
- https://commons.wikimedia.org/wiki/File:Gneiss.jpg
Apr 20, 2005 · This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.: You are free: to share – to copy, distribute and transmit the work; to remix – …
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