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CALCIUM-CARBONATE COMPENSATION DEPTH [1 record]

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Record 1 2009-03-04

English

Subject field(s)
  • Geochemistry
  • Oceanography
DEF

The depth in the oceans below which the rate of supply of calcium carbonate ... equals the rate of solvation, such that no calcium carbonate is preserved.

OBS

carbonate compensation depth: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Géochimie
  • Océanographie
DEF

Niveau (entre 3 500 et 5 000 mètres) dans l'océan au-dessous duquel on ne trouve plus de carbonates dans les dépots marins, ceux-ci étant dissous.

CONT

[Le niveau] où la dissolution est totale est le niveau de compensation des carbonates (NCC ou CCD, Calcite Compensation Depth). La CCD située vers 5 000 m dans l'Atlantique est moins profonde dans le Pacifique [...]

CONT

Le niveau de dissolution totale de la calcite ou niveau de compensation de la calcite [...] est la profondeur en dessous de laquelle le taux de dissolution de la calcite excède le taux d'apport.

OBS

Le chiffre 3 dans la vedette «surface de compensation du CaCO3» s'écrit en indice.

OBS

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

Spanish

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