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STROMATOLITHE [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-01-31

English

Subject field(s)
  • Paleontology
  • Petrography
CONT

High-relief thrombolites and stromatolites characterize sub-tidal facies, and low-relief and planar stromatolites, with local oncoids, typify the inter-supratidal facies.

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."

OBS

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

French

Domaine(s)
  • Paléontologie
  • Pétrographie
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 planaire : terme en usage à Ressources naturelles Canada-Secteur des sciences de la Terre.

Spanish

Save record 1

Record 2 2008-11-06

English

Subject field(s)
  • Paleontology
  • Petrography
  • Algae
DEF

A layered accretionary structure formed in shallow water by the trapping, binding, and cementation of sedimentary grains by biofilms of microorganisms, especially cyanobacteria (commonly known as blue-green algae).

CONT

Stromatolites are the oldest known fossils, dating back more than 3 billion years. They are colonial structures formed by photosynthesizing cyannobacteria and other microbes. Stromatolites are prokaryotes(primitive organisms lacking a cellular nucleus) that thrived in warm aquatic environments and built reefs much the same way as coral does today. Cyannobacteria were likely responsible for the creation of earth's oxygen atmosphere. ... Today they are nearly extinct ...

OBS

Stromatolites (from Greek ... stroma, mattress, bed, stratum, and ... lithos, rock).

OBS

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

French

Domaine(s)
  • Paléontologie
  • Pétrographie
  • Algues
DEF

Roche calcaire et/ou structure marine biogénique et organique laminée double-couche.

CONT

La stromatolite est une algue monocellulaire qui croissait dans les eaux peu profondes et de salinités différentes. Elles vivaient de photosynthèse et sont en grande partie responsables de la préparation et de la formation d’une atmosphère respirable qui plus tard accueillerait la vie sur les continents. Leur structure calcaire et lamellaire les rendit plutôt propices à la fossilisation et sont très faciles à identifier.

OBS

L’origine biologique des stromatolites est avérée pour les roches récentes, de moins de 350 millions d’années. Elle est le fait de micro-organismes, comme des cyanobactéries, qui précipitent le bicarbonate en carbonate de calcium. Cette origine biologique est discutée pour les stromatolites plus anciennes.

OBS

Les stromatolithes ne sont pas des organismes fossilisés : ils représentent des précipitations de particules autour de massifs d’algues, lesquels ont ensuite disparu.

OBS

Un stromatolithe ou stromatolite(du grec strôma, tapis, et lithos, pierre) [...]

OBS

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

Spanish

Campo(s) temático(s)
  • Paleontología
  • Petrografía
  • Algas
DEF

Estructura sedimentaria, calcárea, que se caracteriza por una laminación fina y ondulada. Se origina por la actividad de las algas cianofíceas en aguas muy someras y con temperatura superior a los 20 grados celsius.

Save record 2

Record 3 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 3

Record 4 2006-11-15

English

Subject field(s)
  • Paleontology
  • Petrography
CONT

Domal Stromatolites: Intercalated with columnar and stratiform stromatolites occur diverse forms of cumulative , nodular, domal and columnar-stratiform stromatolites of small dimensions, generally with irregular internal and crenulated laminations ...

CONT

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

CONT

Stratigraphically above the laminar stromatolites both columnar, laminar and dome stromatolites could be found together.

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

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

French

Domaine(s)
  • Paléontologie
  • Pétrographie
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

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

Spanish

Save record 4

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