TERMIUM Plus®

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POORLY BEDDED [6 records]

Record 1 2008-08-25

English

Subject field(s)
  • Petrography
DEF

A marine sedimentary facies characterized by a thick sequence of poorly fossiliferous, thinly bedded, graded deposits composed chiefly of marls and sandy and calcareous shales and muds, rhythmically interbedded with conglomerates, coarse sandstones, and graywackes.

CONT

... there are two major facies of sediments associated with geosynclines or mobile belts. These are the "flysch" and the "molasse" facies. ... The flysch facies is marked by its great thickness and its predominantly argillaceous nature. It is almost wholly clastic, although at some stages bedded cherts or radiolarites were deposited. ... The bedding is well marked, uniform, and rhythmic ... The principal material is shale or silty shale regularly interbedded with graded beds of dark sandstone (usually graywackes) varying from a few centimeters to a meter or two in thickness. ... Graded bedding is the rule; large-scale cross-bedding is absent, although ripple bedding may be present. ... Noteworthy is the absence of carbonates, except as concretions in siltstone beds.

CONT

The flysch-like facies consists of greywacke-mudstone with locally abundant conglomerate and iron-formation ...

OBS

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

Key term(s)
  • flyschlike facies

French

Domaine(s)
  • Pétrographie
DEF

[...] formation de faciès particulier qui peut avoir pris naissance à différentes époques géologiques [et qui] elle est constituée par une alternance [...] de bancs de grès, de sables, de conglomérats, de schistes argileux ou marneux et, plus rarement, de calcaires.

CONT

Des cordillères surgissent, alimentant les bras de mer en matériel de plus en plus grossier. C'est ainsi que le faciès «flysch» s'installe d'abord dans les parties internes, puis vers l'extérieur, ainsi que le montrent les séries orogéniques des diverses unités préalpines et helvétiques dans les Alpes françaises, suisses, bavaroises et autrichiennes.

CONT

Le flysch constitue donc une formation marine essentiellement détritique qui semble s'être déposée, sous l'effet de courants de turbidité, à une profondeur moyenne [...] susceptible de variations dans le temps et dans l'espace.

CONT

Pendant longtemps, le flysch a représenté un dépôt rythmique, très épais [...], très étendu et formé d'une alternance de grès et de schistes ou marnes [...] il y a une prédominance constante de carbonate, dont le taux varie de 30 à 90 p. cent [...] du moins pour les bassins récents [...]

OBS

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

Spanish

Campo(s) temático(s)
  • Petrografía
Save record 1

Record 2 2006-11-15

English

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

Glacial sediment of stratified sand and gravel formed by glacial meltwater streams.

CONT

Outwash sediments are commonly characterized by poorly bedded gravels interlayered with well-bedded(and commonly cross-bedded) sands.

OBS

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

French

Domaine(s)
  • Géologie
  • Hydrologie et hydrographie
CONT

La plage s'étend sur une large plaine sableuse, au pied d'un vaste delta glaciaire composé de sédiments d'épandage fluvioglaciaire.

Spanish

Save record 2

Record 3 2006-05-18

English

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

To slip or settle down.

CONT

Rock or earth slumps in a landslide ...

CONT

... talus ores... are poorly sorted and consist of angular to subangular blocks of bedded ore from all parts of the iron-formation sequence that have slumped into fissures and crevices along fault scarps.

French

Domaine(s)
  • Mécanique des sols
CONT

[Les] minerais d'éboulis [...] sont mal triés et sont composés de blocs plus ou moins anguleux de minerai stratifié, provenant de toutes les parties de la séquence de la formation de fer qui se sont effondrées dans les fissures et les crevasses le long d'escarpements de faille.

Spanish

Save record 3

Record 4 2006-02-03

English

Subject field(s)
  • Various Metal Ores
CONT

Sand and gravel rubble ores grade downward to talus ores, which are poorly sorted and consist of angular to subangular blocks of bedded ore from all parts of the iron-formation sequence that have slumped into fissures and crevices along fault scarps.

French

Domaine(s)
  • Minerais divers (Mines métalliques)
CONT

Les minerais formés de sables et de graviers se transforment vers le bas en minerais d'éboulis; ceux-ci sont mal triés et sont composés de blocs plus ou moins anguleux de minerai stratifié, provenant de toutes les parties de la séquence de la formation de fer qui se sont effondrées dans les fissures et les crevasses le long d'escarpements de faille.

Spanish

Save record 4

Record 5 2005-10-15

English

Subject field(s)
  • Translation (General)
  • Various Metal Ores
OBS

Poorly bedded massive oxide zones.

French

Domaine(s)
  • Traduction (Généralités)
  • Minerais divers (Mines métalliques)
OBS

Zones d'oxydes massifs faiblement stratifiés.

Spanish

Save record 5

Record 6 1991-04-12

English

Subject field(s)
  • Geology
DEF

A poorly sorted but well bedded accumulation of coarse reef detritus, usually much larger in volume than the parent reef, with a surface inclination up to 40 °.

French

Domaine(s)
  • Géologie

Spanish

Save record 6

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