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ALTERACION DEUTERICA [1 record]

Record 1 2005-03-07

English

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

Textural and mineralogical changes occurring within an igneous rock during the final crystallization stage of the molten rock.

CONT

Intrusion of the diabase sheets was accompanied by contact metasomatic alteration of the country rocks and by deuteric alteration of the diabase itself.

OBS

[Deuteric alteration] usually occurs at well above room temperature, but some changes can be delayed for a few years after solidification.

French

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

altération deutérique (en grec : après naissance) : Cette altération comporte : séricitisation et kaolinisation des feldspaths, formation de calcite, décomposition des minéraux ferro-magnésiens en oxydes de fer et chlorite.

CONT

[...] les teneurs les plus faibles en cuivre se trouvent dans les faciès rouges à hématite résultant de l'altération deutérique.

Spanish

Campo(s) temático(s)
  • Geoquímica
  • Erosión y corrosión (Geología)
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