TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

EPIGENETIC ORE DEPOSIT [3 records]

Record 1 2011-07-19

English

Subject field(s)
  • Various Metal Ores
DEF

In ore petrology, applied to mineral deposits of later origin than the enclosing rocks ...

CONT

An epigenetic deposit... is one believed to have come into being after the host rocks in which it occurs. A good igneous analogy is a dyke; an example among ore deposits is a vein.

OBS

As opposed to "syngenetic" which applies to mineral deposits formed contemporaneously with the enclosing rocks.

French

Domaine(s)
  • Minerais divers (Mines métalliques)
DEF

S'applique à des gîtes minéraux mis en place après la formation des roches encaissantes.

CONT

Il est toujours délicat de trancher entre les concrétions syngénétiques, contemporaines des sédiments dans lesquels on les rencontre, et les concrétions épigénétiques formées tardivement.

Spanish

Save record 1

Record 2 2005-06-06

English

Subject field(s)
  • Various Metal Ores
DEF

... a vein which crosses the bedding planes of strata.

CONT

... the majority of ore deposits occur in metamorphosed host rocks. Among these deposits the substantial proportion... have been involved in the metamorphic episode(s) and consequently their texture and mineralogy may be considerably modified, often to the advantage of mineral separation processes. In addition, parts of the orebody may be mobilized and epigenetic features, such as cross-cutting veins, may be imposed on a syngenetic deposit.

French

Domaine(s)
  • Minerais divers (Mines métalliques)
CONT

Si ces prolongements [apophyses émises par des laccolites] s'insinuent entre les lits des roches sédimentaires encaissantes, ce sont des filons-couches ou sills par opposition aux filons transverses qui recoupent obliquement les plans de stratification.

Spanish

Save record 2

Record 3 1997-10-31

English

Subject field(s)
  • Metals Mining
  • Economic Geology
  • Geochemistry
DEF

... [an] ore (mineral) deposit of later origin than the enclosing rocks.

French

Domaine(s)
  • Mines métalliques
  • Géologie économique
  • Géochimie
DEF

Gîte minéral de formation secondaire à l'intérieur de la roche encaissante.

OBS

Voir fiche «gisement épigénétique».

Spanish

Save record 3

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