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

TAPIS ALGAIRE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2006-11-15

English

Subject field(s)
  • Paleontology
  • Petrography
CONT

Columnar stromatolites were abundant and widespread in the Proterozoic but are exceedingly rare in modern seas. ...the subtidal columnar stromatolites have a significant component of algal eukaryotes dominated by motile diatoms with mucilaginous tubes.

CONT

The Hoyt formation is extremely fossiliferous with columnar, domal and planar stromatolites and trilobites.

OBS

Stromatolites (from Greek stroma, mattress, bed, stratum, and lithos, rock) are defined as "attached, lithified sedimentary growth structures, accretionary away from a point or limited surface of initiation." A variety of stromatolite morphologies exist including conical, stratiform, branching, domal, and columnar types.

OBS

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

French

Domaine(s)
  • Paléontologie
  • Pétrographie
CONT

[...] l'action des vagues et des courants ainsi que l'accumulation de sédiments détruit localement le tapis, limitant la croissance algaire à des zones légèrement surélevées, à l'abri relatif des apports sédimentaires. Au fil du temps, le relief tend à s’exagérer, et a former une ride ou une colonne stromatolithique.

OBS

Un stromatolithe ou stromatolite (du grec strôma, tapis, et lithos, pierre) est une roche calcaire et/ou une structure marine biogénique et organique laminée double-couche (On parle aussi parfois de «thrombolite»).

OBS

stromatolithe en pilier; stromatolithe en colonne; colonne stromatolithique : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Key term(s)
  • pilier stromatolithique
  • stromatolite en pilier
  • stromatolite en colonne

Spanish

Save record 1

Record 2 2006-10-25

English

Subject field(s)
  • Algae
  • Marine Biology
DEF

A layered communal growth of algae observed in fossils and in present day tidal zones associated with carbonate sedimentation.

CONT

Others have thought that the kerogen represents algal mats that grew in situ and that these organic mats trapped uranium and gold both mechanically and chemically.

French

Domaine(s)
  • Algues
  • Biologie marine
DEF

Ensemble d’algues et de phanérogames marines arrachées de leur support et accumulées en cordon à la limite des hautes mers.

CONT

Pour d’autres chercheurs, les horizons de kérogène sont les vestiges de tapis algaires formés sur place qui auraient piégé de façon mécanique et chimique l’uranium et l’or.

CONT

Dans les aires lagunaires, les goémons d’épave en cours de décomposition sédimentent sur les hauts-fonds et enrichissent les sédiments sous-jacents en nutriments.

OBS

matte algale : d’après Annales de l’Institut océanographique, 1982, 58(2).

Spanish

Campo(s) temático(s)
  • Algas
  • Biología Marina
Save record 2

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