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SERPENTINIZED ULTRAMAFIC ROCK [1 record]

Record 1 1997-11-18

English

Subject field(s)
  • Petrography
  • Erosion and Weathering (Geol.)
  • Geochemistry
CONT

Much of New Caledonia is underlain by ultrabasic rocks many of which are strongly serpentinized.

CONT

... the abrupt loss of magnetic signature along a magnetic unit, such as iron formation, serpentinized ultramafic rock or iron-rich gabbro, may indicate the presence of a zone of carbonatization or sulphidation related to gold mineralization.

French

Domaine(s)
  • Pétrographie
  • Érosion et corrosion (Géologie)
  • Géochimie
CONT

Le mot ophiolite fut à l'origine synonyme de serpentine [...] puis de «roches vertes» c'est-à-dire de l'ensemble des roches magmatiques basiques et ultrabasiques plus ou moins serpentinisées et métamorphosées présentes dans les chaînes alpines.

OBS

Voir fiche «roche ultrabasique».

Spanish

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