TERMIUM Plus®

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

DIRT BAND [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-10-26

English

Subject field(s)
  • Glaciology
DEF

[One of a group of] alternating bands of dirty and clean ice below an ice fall within a glacier, formed by summer and winter movement over the ice fall.

OBS

A type of band described by James D. Forbes (1809-1868), English physicist, who originally named it a "dirt band."

OBS

Forbes was ... the first to recognize the annual dirt bands that mark glaciers below ice falls. These bands are commonly called "ogives," but are more properly named "Forbes bands" ...

French

Domaine(s)
  • Glaciologie
DEF

Différenciation à la surface du glacier, à l'aval des grandes chutes de glace, de bandes paraboliques annuelles à convexité tournée vers l'aval, elles combinent une disposition en vagues transversales avec une alternance de colorations claire et foncée.

CONT

Les bandes de Forbes ou ogives sont des bandes annuelles, bleues ou sombres, à la surface d'un glacier. Elles sont liées à la chute de séracs. La glace est zébrée de bandes alternativement bleutées (claire en hiver) ou grises (en été, dues aux poussières) qui se déforment progressivement en ogives ou chevrons. La chute de séracs est une condition essentielle mais toutes les chutes ne donnent pas forcément des bandes de Forbes.

Spanish

Save record 1

Record 2 2011-05-17

English

Subject field(s)
  • Economic Geology
  • Metals Mining
  • Lignite, Graphite and Coal Mining
DEF

A thin layer of waste material which lies parallel to the bedding plane between ore veins or coal seams.

OBS

According to the ISO norm (ISO-R1213-2E, 1971), a "dirt band" is thicker than a "parting."

OBS

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

Key term(s)
  • intervening stratum

French

Domaine(s)
  • Géologie économique
  • Mines métalliques
  • Exploit. de charbons fossiles autres que la tourbe
DEF

Intervalle entre deux couches de houille ou de minerai, formé par du terrain naturel [...]

CONT

Au milieu d'une couche de charbon une barre est gréseuse ou schisteuse.

OBS

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

Spanish

Campo(s) temático(s)
  • Geología económica
  • Minas metálicas
  • Explotación de lignito, grafito y carbón
DEF

[...] los estratos de roca estéril que se presentan entre las capas del combustible o dentro de las mismas capas.

Key term(s)
  • intercalación estéril
Save record 2

Record 3 1998-10-20

English

Subject field(s)
  • Geology
DEF

Any dark layer in a glacier, usually the trace of silt or debris along a summer surface.

French

Domaine(s)
  • Géologie

Spanish

Save record 3

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