TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

ROCHE AMORPHE [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-02-03

English

Subject field(s)
  • Petrography
DEF

Pertaining to pisolite or to the characteristic texture of such a rock.

CONT

Low-level peneplain-type bauxites ... are distinguished by the development of pisolitic textures and are often boehmitic in composition.

OBS

pisolitic: term used at Natural Resources Canada - Earth Sciences Sector.

PHR

Pisolitic sediment.

French

Domaine(s)
  • Pétrographie
DEF

Qui contient des pisolites.

CONT

Si l’agrégat est formé de nodules plus ou moins sphériques, il va du «pisolitique» à l’«oolitique», en fonction de la diminution de la taille des nodules [...]

CONT

Le minerai d’aluminium est la bauxite, roche cohérente assez dure et de structure variée :amorphe, granuleuse, pisolithique ou même bréchoïde [...]

OBS

pisolitique; pisolithique : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

PHR

Concrétion, sédiment pisolitique.

Spanish

Save record 1

Record 2 2003-12-23

English

Subject field(s)
  • Petrography
  • Soil Mechanics (Engineering)
DEF

Any material that forms an essential part of the Earth's solid crust; it includes sands as well as sandstones.

DEF

Any naturally formed aggregate of mineral matter occurring in large masses or fragments.

CONT

Some rocks ... are monomineralic aggregates, but most are composed of a variety of different minerals. Rocks need not necessarily be hard and resistant. Loose sand and wet clay are just as much rocks to the geologist as the compacted sands called sandstones and the hardened clays called shale.

OBS

The distinction between rocks and minerals is that minerals are crystalline chemical compounds, whereas rocks are aggregates.

OBS

Rocks are divided into three groups on the basis of their mode of origin: igneous, metamorphic, and sedimentary.

French

Domaine(s)
  • Pétrographie
  • Mécanique des sols
DEF

En géotechnique, par opposition à sol, agrégat naturel de matière minérale lié par des forces de cohésion importantes et permanentes, et qui se présente en masse ou en fragments de grande taille.

CONT

Une roche [...] présente seulement une homogénéité relative. Elle comprend plusieurs minéraux juxtaposés, sous la forme cristalline ou amorphe [...] [mais la composition] n’ est pas absolument fixe, tandis que chaque minéral a sa composition fixe [...]

CONT

Une roche peut être formée d’une seule substance chimique [...] ou minéral. Mais en général, plusieurs minéraux concourent à sa formation.

Spanish

Campo(s) temático(s)
  • Petrografía
  • Mecánica del suelo
DEF

Material sólido que se origina en el interior o en la superficie de la corteza terrestre como consecuencia de los procesos endógenos o exógenos.

Save record 2

Record 3 2001-06-06

English

Subject field(s)
  • Geochemistry
  • Mineralogy
CONT

The name collophane has been widely applied to cryptocrystalline phosphate mineral ...

French

Domaine(s)
  • Géochimie
  • Minéralogie
CONT

phosphate :Roche sédimentaire marine [...] contenant des minéraux phosphatés sous forme amorphe ou cryptocristalline(collophanite) [...]

Spanish

Save record 3

Record 4 2001-02-28

English

Subject field(s)
  • Natural Construction Materials
  • Building Insulation and Acoustical Design
CONT

External Insulation ... You must notify your local council and this type of work must be carried out by the professionals as you will have to change the window frames and pipes. The material is usually glass or rock fibre and must be fitted above the damp proof course.

CONT

Porous absorbent. When the mineral fibers like glass fiber or rock fiber are exposed in air for a long time, they begin to effloresce into dust. By that reason, others generally install for packing with vinyl films decreasing the absorption effect. But we install the mineral plastic particles of strong durability with PVF film of chemical fiber, and therefore, our products have the features of an excellent durability as well as the best absorption effect.

OBS

Not to be confused with mineral fiber, which is a broader term.

French

Domaine(s)
  • Matériaux de construction naturels
  • Isolation et acoustique architecturale
DEF

La fibre de roche est un filament obtenue par fusion et soufflage de roches sédimentaires profondes; inorganique et amorphe, elle ne favorise pas le développement des bactéries.

CONT

Dans les systèmes isolés avec de la fibre de roche ou de la fibre cellulosique, la résistance au feu est plus grande parce que ces isolants résistent plus longtemps à la chaleur. La fibre de roche et la fibre cellulosique, plus denses, fournissent également un degré d’isolation acoustique plus élevé que la fibre de verre.

Spanish

Save record 4

Record 5 1999-10-01

English

Subject field(s)
  • Petrography
DEF

[A rock] having no definite crystalline structure.

French

Domaine(s)
  • Pétrographie

Spanish

Save record 5

Record 6 1999-08-09

English

Subject field(s)
  • Mineralogy
  • Radioactive Ores (Mining)
  • Erosion and Weathering (Geol.)
CONT

Many minerals are known in the metamict state, some only in this state; ... Goldschmidt (1924) enumerated three conditions required for metamictization: A. The original structure must be only weakly ionic and possibly susceptible to hydrolysis. B. The structure must contain one or more kinds of ions that are readily susceptible to changes in the state of ionization. C. In many cases, it may additionally be necessary that the crystal is subjected to relatively strong radiation, either from radioactive material within the crystal or from outside sources.

French

Domaine(s)
  • Minéralogie
  • Minerais radioactifs (Mines métalliques)
  • Érosion et corrosion (Géologie)
DEF

[...] état de désordre causé dans un réseau cristallin sous l'influence de la radioactivité(p. ex. par désintégration d’uranium, ou de thorium, contenu dans une roche). Les cristaux subissent de ce fait des modifications de leur teinte [...] et tendent progressivement vers un état amorphe. On peut parfois faire disparaître l'état métamicte par simple chauffage du cristal.

Spanish

Save record 6

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