TERMIUM Plus®

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

EPIGENETIC VEIN [7 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 2010-07-27

English

Subject field(s)
  • Tectonics
  • Metals Mining
CONT

At Silvermines in Ireland, lead-zinc mineralization occurs as... fault-bounded epigenetic strata-bound orebodies in the basal Carboniferous and as structurally controlled vein or breccia zones in the Upper Devonian sandstones...

OBS

fault-bounded: term used at Natural Resources Canada - Earth Sciences Sector.

PHR

Fault-bounded basin.

French

Domaine(s)
  • Tectonique
  • Mines métalliques
CONT

La formation, limitée par des failles, repose en discordance sur les couches du supergroupe de Kaniapiskau.

OBS

Il semble redondant de retrouver dans la même expression «limité» et «bordières». Les expressions «limité par des failles» ou «entre failles bordières» seraient plus justes.

OBS

limité par des failles : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

PHR

Bassin limité par des failles.

Spanish

Save record 2

Record 3 2005-09-30

English

Subject field(s)
  • Various Metal Ores

French

Domaine(s)
  • Minerais divers (Mines métalliques)

Spanish

Save record 3

Record 4 2005-01-19

English

Subject field(s)
  • Various Metal Ores
CONT

Arsenide-silver-uranium vein deposits are epigenetic concentrations of silver minerals, arsenides, sulpharsenides, sulphides, and accompanying chalcophile and siderophile elements, and of uranium oxides and silicates and accompanying lithophile(oxyphile) elements.

French

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

Les gîtes filoniens d'argent et d'uranium à arséniures sont des concentrations épigénétiques de minéraux (éléments natifs, arséniures, sulfoarséniures et sulfures) d'argent et autres éléments chalcophiles et sidérophiles associés, ainsi que de minéraux (oxydes et silicates) d'uranium et autres éléments lithophiles (oxyphiles) associés.

Key term(s)
  • gisement filonien d'argent et d'uranium à arséniures

Spanish

Save record 4

Record 5 2004-07-12

English

Subject field(s)
  • Metals Mining
  • Economic Geology
CONT

At Silvermines in Ireland, lead-zinc mineralization occurs as syngenetic stratiform orebodies in a limestone sequence..., as fault-bounded epigenetic strata-bound orebodies in the basal Carboniferous and as structurally controlled vein or breccia zones in the Upper Devonian sandstones...

OBS

[The term stratiform] must not be confused with strata-bound which refers to any type or types of orebody, concordant or discordant, which are restricted to a particular part of the stratigraphic column. Thus the veins, pipes and flats of the Southern Pennine orefield of England can be designated as strata-bound, as they are virtually restricted to the Carboniferous limestone of that region.

French

Domaine(s)
  • Mines métalliques
  • Géologie économique
CONT

La concentration de la minéralisation en plaques à faces parallèles, de peu d'épaisseur par rapport à leurs autres dimensions, donne naissance aux corps stratiformes ou stratoïdes.

Spanish

Save record 5

Record 6 2003-12-11

English

Subject field(s)
  • Various Metal Ores
  • Economic Geology
CONT

At Silvermines in Ireland, lead-zinc mineralization occurs as syngenetic stratiform orebodies in a limestone sequence..., as fault-bounded epigenetic strata-bound orebodies in the basal Carboniferous and as structurally controlled vein or breccia zones in the Upper Devonian sandstones....

OBS

[The term stratiform] must not be confused with strata-bound which refers to any type or types of orebody, concordant or discordant, which are restricted to a particular part of the stratigraphic column. Thus the veins, pipes and flats of the Southern Pennine orefield of England can be designated as strata-bound, as they are virtually restricted to the Carboniferous limestone of that region.

French

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

Les corps stratiformes se présentent typiquement dans les formations sédimentaires. Ils peuvent correspondre à des concentrations elles-mêmes indubitablement sédimentaires, comme les grands gisements de fer oolithique de Lorraine ou les gisements de manganèse de Tchiatura (Caucase).

Spanish

Save record 6

Record 7 2001-07-04

English

Subject field(s)
  • Geochemistry
  • Metals Mining
CONT

Uranium vein deposits are epigenetic concentrations of uranium minerals, such as pitchblende, coffinite and [plus or minus] brannerite, in fractures, shear zones and stockworks.

French

Domaine(s)
  • Géochimie
  • Mines métalliques
CONT

[...] toute minéralisation est susceptible d'être remise en mouvement par des circulations de solutions aqueuses n'ayant pas une origine magmatique. Ces concentrations hydatogènes épigénétiques sont très nombreuses.

OBS

épigénétique : Produit à la surface de la Terre ou proche de celle-ci.

Spanish

Save record 7

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