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HYDROTHERMAL ALTERATION [1 record]

Record 1 2010-11-19

English

Subject field(s)
  • Erosion and Weathering (Geol.)
  • Geochemistry
  • Thermal Springs - Uses
DEF

A change in the mineralogy as a result of interaction of the rock with hot water fluids called "hydrothermal fluids."

CONT

Hydrothermal alteration of wall rocks associated with vein-stockwork tin and tungsten deposits is commonly greisen-type alteration that is characterized by Li-, F-, and/or B-bearing minerals such as topaz, fluorite, tourmaline, and various F- and/or Li-rich micas.

OBS

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

French

Domaine(s)
  • Érosion et corrosion (Géologie)
  • Géochimie
  • Thermalisme
DEF

Modifications minéralogiques résultant de l'interaction des solutions hydrothermales avec les minéraux préexistants [ou] de l'addition ou de l'enlèvement de minéraux au moyen de fluides hydrothermaux [...]

CONT

Les granites résultants peuvent être [...] soumis à des altérations hydrothermales dues à des circulations de solutions aqueuses chaudes.

CONT

Les altérations hydrothermales se marquent par des modifications de la couleur, de la granulométrie, de la texture et surtout de la composition minéralogique et chimique des roches encaissantes.

OBS

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

Spanish

Campo(s) temático(s)
  • Erosión y corrosión (Geología)
  • Geoquímica
  • Fuentes termales - usos
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