TERMIUM Plus®

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

ROCHE ORIGINE ORGANIQUE [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-02-04

English

Subject field(s)
  • Petrography
  • Erosion and Weathering (Geol.)
  • Geochemistry
DEF

A fragment of rock that was broken from a larger rock or rock unit.

CONT

Clasts ... may vary in size from boulders to silt-sized grains, and are invariably the products of erosion followed by deposition in a new setting.

CONT

Sudbury Breccia has clasts of all sizes (commonly as large as tens of metres), mainly consisting of wall rocks.

OBS

The term is most commonly, but not uniquely, applied to sedimentary rocks.

OBS

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

PHR

Wall rock clast.

French

Domaine(s)
  • Pétrographie
  • Érosion et corrosion (Géologie)
  • Géochimie
DEF

Fragment d’origine minérale ou organique entrant dans la composition d’une roche sédimentaire.

CONT

Ce granoclassement résulte d’une action de calibrage qui affecte les «clastolithes», c’est-à-dire les éléments détritiques, des plus grossiers aux plus fins.

CONT

La Brèche de Sudbury contient des clastes de toutes dimensions (atteignant fréquemment des dizaines de mètres) dérivant principalement des roches encaissantes.

OBS

La terminaison «claste» [comme dans «porphyroclaste», «bioclaste» et «lithoclaste»] est utilisée dans son acception la plus large; «elle rappelle le caractère le plus souvent détritique des grains constituant le sédiment originel» [...]

OBS

[Le terme «claste»] désigne en particulier les fragments de cristaux des roches magmatiques ayant subi un certain broyage et s’oppose alors à «blaste».

OBS

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

PHR

Claste de roche encaissante.

Spanish

Campo(s) temático(s)
  • Petrografía
  • Erosión y corrosión (Geología)
  • Geoquímica
Save record 1

Record 2 2001-03-15

English

Subject field(s)
  • Ecosystems
  • Geochemistry
  • Petrography
CONT

Biodiversity's "abiotic," "non-living", "inorganic" and inanimate matrix is inseparable from, encapsulating of all organisms, shaping their form, structure, behaviour, communications, life. Components of the matrix are: water (made possible all aquatic life and determined their forms and other characteristics), air (made possible: flying birds, lungs, leaves, communications, etc.), soil (made possible: roots, microflora and fauna, etc.), sediment (made possible all organisms that live in sediments), limestone and other biotic rocks (makes mollusc shells, bones, etc.), minerals, nutrients, (essential for animal blood; plant food).

French

Domaine(s)
  • Écosystèmes
  • Géochimie
  • Pétrographie
CONT

Voici les éléments de cette matrice : [...] les sédiments (qui ont rendu possibles les organismes qui y vivent); le calcaire et les autres roches d’origine organique (formés de coquilles de mollusques, d’os, etc.).

Spanish

Save record 2

Record 3 1997-11-14

English

Subject field(s)
  • Petrography
  • Paleontology
  • Mineralogy

French

Domaine(s)
  • Pétrographie
  • Paléontologie
  • Minéralogie
OBS

claste : Fragment d’origine minérale ou organique entrant dans la composition d’une roche sédimentaire.

OBS

Voir fiche «felsique».

Spanish

Save record 3

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