TERMIUM Plus®

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

MUDDY SEDIMENT [5 records]

Record 1 2011-05-17

English

Subject field(s)
  • Petrography
CONT

"Schistes lustrés" are the fine-grained, lustrous, low-grade metamorphic phyllites or schists of the alpine geosyncline. General practice in English is to retain this term which has great specificity.

CONT

These outcrops were once part of the sediment that lay on the floor of the Tethys ocean. Originally they were slightly calcareous and muddy. During metamorphism the clay minerals have been changed to mica, here arranged in dark, elongate clots. The rock is now very shiny-hence it is called informally "schistes lustrés. "

CONT

This study deals with the different components of a part of the Tethyan suture in the north-western French-Italian Alps. It concerns more precisely the lithostratigraphic and structural analysis of the so-called Schistes lustrés complex. ... The Schistes lustrés complex is resolved into three different lithostructural sets of units. The two lower ones, born of the European palaeo-margin for the lowest and of the palaeo-oceanic realm or Tethys for the other, are made of calcschists and marbles labelled by syn-orogenic detrital deposits of composite origin, oceanic and continental.

French

Domaine(s)
  • Pétrographie
DEF

Méta-sédiments océaniques qui doivent leur aspect lustré à la présence de mica blanc.

CONT

On [...] rencontre [séricite, damourite, phengite, pinite, etc.] dans les schistes métamorphiques (schistes lustrés, schistes verts, mica-schistes supérieurs), dans les gisements hydrothermaux ainsi que dans les produits d'altération des feldspaths et de nombreux silicates.

CONT

Des marnes on passe aux schistes calcarifères appelés schistes lustrés dans les Alpes [...]

OBS

Certains schistes sont dits «lustrés», car ils brillent au soleil […]

Spanish

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Record 2 2011-02-11

English

Subject field(s)
  • Hydrology and Hydrography
  • Ecosystems
  • Biogeography
CONT

diatom ooze : A fine muddy sediment consisting of the hard parts of diatoms.

French

Domaine(s)
  • Hydrologie et hydrographie
  • Écosystèmes
  • Biogéographie
DEF

Sédiment à forte teneur d'eau, riche en particules de diamètre inférieur à quelques dizaines de microns [...]

CONT

Après la vague glaciaire, les eaux étaient claires et les lacs entièrement libres de dépôts vaseux.

OBS

Geological Nomenclature, Netherlands RG [et] MS, nº 1987, p. 114 : Ablagerung = dépôt.

Spanish

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Record 3 2011-02-11

English

Subject field(s)
  • Hydrology and Hydrography
  • Ecosystems
  • Biogeography

French

Domaine(s)
  • Hydrologie et hydrographie
  • Écosystèmes
  • Biogéographie
DEF

Sédiment à forte teneur en eau dans lequel la vie végétale est absente.

Spanish

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Record 4 2010-12-22

English

Subject field(s)
  • Geology
  • Hydrology and Hydrography
CONT

Bed forms in muddy sediments include sedimentary furrows, sediment drifts, scoured depressions, moats, and obstacle-induced scours.... Sediment drifts are the opposite of moats and are localized deposits of fine-grained material, usually associated with a drop in current velocity and in the lee of topographic elevations, like snow drifts behind an obstacle.

OBS

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

French

Domaine(s)
  • Géologie
  • Hydrologie et hydrographie
CONT

Les formes de relief présentes dans les sédiments boueux comprennent des sillons sédimentaires, des amoncellements de sédiments, des dépressions affouillées, des fossés, et des cicatrices d'affouillement causées par des obstacles. [...] Les amoncellements de sédiments sont le contraire des fossés et sont des dépôts localisés de matières fines présentant un relief positif, qui sont habituellement associés à une diminution de la vitesse du courant et situés du côté sous le vent d'élévations topographiques, comme les bancs de neige qui se forment derrière un obstacle.

CONT

La forme et la localisation de ces amas de sédiments [...] révèle la direction de l'écoulement de l'eau, soit de droite à gauche.

OBS

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

Spanish

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Record 5 1989-04-25

English

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

Porosity resulting from burrowing organisms. Although this type of porosity is uncommon in ancient carbonate rocks due to collapse of burrows, other types of porosity such as inter-particle porosity can develop within the burrow filling material, esp. if its permeability is greater than that of the host sediment...

OBS

[Burrows are] features created by organic burrowing in relatively unconsolidated sediment, in contrast to borings, which formed in rigid sedimentary particles or rock. Porosity representing discrete burrows is relatively uncommon in ancient carbonate rocks, because most burrows collapse, become filled by sediment, or are backfilled by the burrow-forming organism itself. However, other types of porosity, such as inter-particle porosity, may occur within burrow fillings in carbonate facies. In somewhat muddy facies, burrow fillings may have more permeability than the host sediment. Commonly these structures, perhaps because of higher permeability, appear to have localized dolomitization.... In some carbonates the porosity is largely in dolomitized burrows.

French

Domaine(s)
  • Mécanique des sols
  • Science du sol
CONT

On observe fréquemment dans les terres dont l'activité biologique est intense, à côté des cheminements des vers de terre, un grand nombre de fins canalicules qui résultent du travail de petits insectes et animalcules divers. Quand ce type de pores devient prédominant, on dit du sol qu'il a une "porosité tubulaire" (...)

Spanish

Save record 5

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