TERMIUM Plus®

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PRESQUE SPHERIQUE [1 record]

Record 1 2009-05-07

English

Subject field(s)
  • Geology
DEF

A roundness grade in which considerable wear is shown.

CONT

Arenaceous rocks in which the particle shape is angular to sub-angular are termed grits, while the remainder, with rounded to sub-rounded grains, are termed sandstones.

OBS

[In this grade type] edges and corners are rounded to smooth curves, and the area of the original faces is considerably reduced, but the original shape of the grain is still distinct.

OBS

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

French

Domaine(s)
  • Géologie
CONT

[...] les grains de sable façonnés par le vent sont généralement piquetés et mats, subsphériques. Ils sont appelés «ronds-mats» en morphoscopie [...]

CONT

[...] des septaria, nodules subsphériques caractérisés par des craquelures radiales et concentriques.

OBS

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

Spanish

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