TERMIUM Plus®

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

GRAINSTONE [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2024-02-22

English

Subject field(s)
  • Petrography
DEF

... a mud-free ..., grain-supported, carbonate sedimentary rock. It may be current-laid or formed by mud being washed out from previously deposited sediment, or it may result from mud being bypassed while locally produced particles accumulated.

French

Domaine(s)
  • Pétrographie
DEF

Roche carbonatée dont les composants organiques ne sont pas liés entre eux pendant le dépôt et qui n’a pas de particules fines (boue).

CONT

Les grainstones sont une simple accumulation de grains jointifs. Cette variété [de roches carbonatées] peut avoir de multiples origines : née sous courants rapides, ou packstone à boue secondairement déplacée, ou due à une production trop rapide de grains.

Spanish

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Record 2 2008-06-16

English

Subject field(s)
  • Petrography
  • Geochemistry
DEF

A limestone composed almost entirely of lime mud (micrite) and less than 10% grains (ooids, peloids, bioclasts, or intraclasts).

CONT

Lime mudstones are composed of clay sized carbonate particles. These particles can be derived from the disaggregation of relatively complex organisms such as Halimeda, or they can be tests of organisms such as coccolithophorids or foraminifers.

OBS

Note that a lime mudstone is a carbonate rock.

OBS

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

French

Domaine(s)
  • Pétrographie
  • Géochimie
CONT

D'autres types de roches-récif comprennent du mudstone calcaire riche en stromatactis, du cimentstone, du mudstone calcaire zébroïde à stromatactis, du grainstone à crinoïde et plus rarement du boundstone à stromatoporoïde.

OBS

mudstone calcaire : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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Record 3 2008-06-16

English

Subject field(s)
  • Tectonics
CONT

The Guará Formation (Upper Jurassic) displays a well-defined facies shift along its outcrop belt. On its northern portion it is characterised by coarse-grained to conglomeratic sandstones with trough and planar cross-bedding, as well as low-angle lamination, which are interpreted to represent braided river deposits.

OBS

low-angle lamination: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Tectonique
CONT

Grainstone oolithique à laminations planes ou à angle faible.

OBS

lamination à angle faible : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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Record 4 2006-11-15

English

Subject field(s)
  • Petrography
CONT

Facies group B includes bioclast grainstone, ooid grainstone, oncoid grainstone, bioclast intraclast grainstone, and sandy ooid bioclast grainstone microfacies which indicates barrier and beach environment (sandy ooid bioclast grainstone).

OBS

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

French

Domaine(s)
  • Pétrographie
OBS

grainstone à ooïdes : terme en usage à Ressources naturelles Canada-Secteur des sciences de la Terre.

Spanish

Save record 4

Record 5 2001-03-15

English

Subject field(s)
  • Petrography
  • Geochemistry
  • Geology
DEF

A limestone consisting of a variable proportion of skeletal debris and carbonate mud (micrite); specifically a limestone containing less than 25% intraclasts and less than 25% ooliths, with a volume ratio of fossils and fossil fragments to pellets greater than 3 to 1, and the carbonate-mud matrix more abundant than the sparry-calcite cement ...

CONT

At the base, there is usually an abrupt change to massive pyrite from a footwall of nodular micrite, shale biomicrite and other limestone units of the Mudbank Limestone.

OBS

The major organism is often specified, e.g., brachiopod biomicrite ...

French

Domaine(s)
  • Pétrographie
  • Géochimie
  • Géologie
DEF

Calcaire similaire à la biosparite sauf que la calcite est plus abondante sous forme de microcristaux de type micrite que sous forme de cristaux de type spathite dans le ciment.

CONT

La famille des roches [allochimiques] peut, à son tour, se diviser en deux groupes d’après la nature du ciment. Nous aurons ainsi : I) À ciment de calcite spathique : [...] II) Avec matrice de calcite microcristalline : 1) avec [intraclastes] : Intramicrite [...] 2) avec oolithes : Oomicrite [...] 3) avec fossiles : Biomicrite [....] 4) avec «pellets» : Pelmicrite [...]

CONT

Biomicrite à pellets de type grainstone à packstone.

Key term(s)
  • calcaire organogène

Spanish

Save record 5

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