TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

Characteristic of, pertaining to, produced by, or occurring during metasomatosis (replacement).  2, record 1, English, - metasomatic

Record number: 1, Textual support number: 1 OBS

The term is especially used in connection with the origin of ore deposits.  2, record 1, English, - metasomatic

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Se dit de ce qui est lié à la métasomatose.  2, record 1, French, - m%C3%A9tasomatique

Record number: 1, Textual support number: 1 CONT

Les feldspaths [...] ont subi différents changements (phénomènes de différenciations, [...] altérations métasomatiques avec ou sans changements de composition chimique) qui ont rendu les feldspaths opaques, d'aspect laiteux [...]  3, record 1, French, - m%C3%A9tasomatique

Record number: 1, Textual support number: 1 PHR

Apport métasomatique.  4, record 1, French, - m%C3%A9tasomatique

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

The conversion of rocks to a granitic assemblage by the action of metasomatic fluids.  2, record 2, English, - metasomatic%20granitization

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

The process of practically simultaneous capillary solution and deposition by which a new mineral may grow in the body of an old mineral or mineral aggregate.  7, record 3, English, - metasomatism

Record number: 3, Textual support number: 1 CONT

Metasomatism, or replacement, is the process of essentially simultaneous removal and deposition of chemical matter. A striking manifestation of this process in mineral deposits is the replacement of one mineral by another mineral ... of partly or wholly different composition. A large volume of rock may be transformed ..., and the resulting deposit is generally of equal volume.  8, record 3, English, - metasomatism

Record number: 3, Textual support number: 2 CONT

... columbite may have formed by metasomatism of pyrochlore (replacement of calcium in pyrochlore by iron ...).  5, record 3, English, - metasomatism

Record number: 3, Textual support number: 1 OBS

Compare with the term "replacement" (see record) that has a more general meaning.  9, record 3, English, - metasomatism

Record number: 3, Textual support number: 2 OBS

metasomatism: term used at Natural Resources Canada - Earth Sciences Sector.  10, record 3, English, - metasomatism

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Métamorphisme qui s'accompagne d'une modification de la composition chimique globale des roches originelles par la substitution d'un solide minéral par un autre au sein de cette même roche.  7, record 3, French, - m%C3%A9tasomatisme

Record number: 3, Textual support number: 1 CONT

Les processus métasomatiques ont lieu dans des conditions de température et de pression très variables. Ils peuvent s'accompagner de modifications de volume, mais, très souvent, les substitutions ont lieu sans changement de volume [...]  8, record 3, French, - m%C3%A9tasomatisme

Record number: 3, Textual support number: 2 CONT

Dans la métasomatose, les nouveaux minéraux se substituent aux anciens sans que leurs formes extérieures en soient modifiées. Les cas les plus fréquents sont la dolomitisation des calcaires et les silicifications [...]  9, record 3, French, - m%C3%A9tasomatisme

Record number: 3, Textual support number: 1 OBS

La notion de variation chimique tend à se substituer à celle d'apport magmatique dont la réalité n'a jamais été démontrée. Plutôt que d'apports, il s'agit d'échanges d'éléments, de remplacement d'une molécule, d'un atome ou d'un ion par un autre, définition même de la métasomatose.  10, record 3, French, - m%C3%A9tasomatisme

Record number: 3, Textual support number: 2 OBS

métasomatisme : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.  11, record 3, French, - m%C3%A9tasomatisme

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 DEF

Proceso de transformación de una roca consistente en el reemplazamiento de uno de sus minerales por otro llamado mineral de substitución.  3, record 3, Spanish, - metasomatosis

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

The ore ... formed from epigenetic hydrothermal solutions in the metasomatic syenite (or "sponge rock" of Lang et al., 1962).  1, record 4, English, - sponge%20rock

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Le minerai [...] s'est formé à partir de solutions hydrothermales épigénétiques dans la syénite métasomatique (la «roche éponge» de Lang et al., 1962).  1, record 4, French, - roche%20%C3%A9ponge

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Metasomatism is initiated by the separation of a magmatic-hydrothermal fluid released by crystallization and hydrofracturing of the pluton, which may combine with metamorphic waters to transport base metal cations and sulphur. Metasomatic fluids pass along pluton and dyke contacts, stratigraphic contacts, fractures and other permeable pathways and infiltrate the surrounding wall rocks.  2, record 5, English, - metasomatic%20fluid

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

Les endoskarns se développent essentiellement dans les districts où les fluides métasomatiques ont utilisé des calcaires argileux, des volcanites ou des dykes, très perméables de par leur fracturation, comme dans les gisements de fer circumpacifiques associés aux andésites.  2, record 5, French, - fluide%20m%C3%A9tasomatique

Record number: 5, Textual support number: 2 CONT

Les fluides métasomatiques circulent le long des contacts des plutons et des dykes, des contacts stratigraphiques, des charnières de plis, des fractures et d'autres voies perméables et s'infiltrent dans les roches encaissantes.  3, record 5, French, - fluide%20m%C3%A9tasomatique

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

Metasomatic deposits ... commonly are superimposed on older rocks of the intrusive complex by continuing igneous activity or fluid transport of elements of economic interest (among other); may be crosscutting with respect to intrusive units; and commonly have associated alteration which may be a guide to ore.  2, record 6, English, - metasomatic%20deposit

Record number: 6, Textual support number: 2 CONT

Metasomatic deposits ... occur in alkalic igneous rocks or surrounding country rocks, with mineralization superimposed on pre-existing rocks. The principal commodities recoverable from deposits of this type are niobium, tantalum, beryllium, yttrium, rare earths, gallium, uranium, thorium, and zirconium. Normally only one or two commodities carry the deposit economically, with others if recovered, as byproducts. The principal Canadian example is the Highwood Resources deposit at Thor Lake, NWT ...  2, record 6, English, - metasomatic%20deposit

Record number: 6, Textual support number: 3 CONT

... metasomatic deposits form by the reaction of fluids released during crystallization with pre-existing carbonatite or country rocks.  3, record 6, English, - metasomatic%20deposit

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

[...] les gîtes métasomatiques proviennent de la réaction de fluides libérés au cours de la cristallisation avec des carbonatites de formation antérieure ou avec les roches encaissantes.  4, record 6, French, - g%C3%AEte%20m%C3%A9tasomatique

Record number: 6, Textual support number: 2 CONT

Phlogopite. [...] Mica fréquent des gîtes métasomatiques de contact [...]  5, record 6, French, - g%C3%AEte%20m%C3%A9tasomatique

Record number: 6, Textual support number: 1 OBS

Le terme «gisement de substitution» est [...] plus large que celui de «gisement par métasomatose», puisqu'il peut couvrir des mécanismes par précipitation, analogues à ceux des remplissages de vides filoniens.  3, record 6, French, - g%C3%AEte%20m%C3%A9tasomatique

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

Any rock formed by metasomatism.  3, record 7, English, - metasomatic%20rock

Record number: 7, Textual support number: 1 OBS

Usually its chemical composition has been substantially changed by the alteration and replacement of its original constituents.  3, record 7, English, - metasomatic%20rock

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Roche dont la composition chimique a été modifiée au cours de sa cristallisation par des apports extérieurs.  3, record 7, French, - roche%20m%C3%A9tasomatique

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  French

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 OBS

Plural: metasomatic apophyses.  2, record 9, English, - metasomatic%20apophysis

Record 9,  Textual support,  French

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 CONT

Les minerais de cobalt (Co) se rencontrent surtout dans les gisements hydrothermaux en liaison avec des magmas éruptifs et dans des filons métasomatiques avec de nombreux autres métaux : Ni, Ag, Fe, Cu, Pb.  2, record 10, French, - filon%20m%C3%A9tasomatique

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

Many veins, some zinc and lead deposits, etc., are of metasomatic origin.  2, record 11, English, - metasomatic%20origin

Record number: 11, Textual support number: 2 CONT

Irregular relicts of marble occur in the skarn demonstrating its metasomatic origin.  3, record 11, English, - metasomatic%20origin

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

Said of a rock or mineral that has originated through the process of contact metasomatism.  3, record 12, English, - contact%2Dmetasomatic

Record number: 12, Textual support number: 1 CONT

Iron-rich skarn deposits that provide significant resources of iron belong to two main subtypes: 1) those referred to as contact metasomatic or replacement deposits that developed along the margins of igneous intrusions in association with limestone, dolomite, argillaceous sediments and mafic rocks; and 2) skarns of stratiform type ...  2, record 12, English, - contact%2Dmetasomatic

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 CONT

Phlogopite : [...] Mica fréquent des gîtes métasomatiques de contact avec la calcite [...]  1, record 12, French, - m%C3%A9tasomatique%20de%20contact

Record number: 12, Textual support number: 1 OBS

Voir fiche «métasomatose de contact».  2, record 12, French, - m%C3%A9tasomatique%20de%20contact

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 CONT

Les réactions métasomatiques suivent en général la loi d'action de masse, et, pour que la substitution ait lieu, les fluides doivent atteindre une certaine concentration minimale en substance dissoute.  1, record 13, French, - r%C3%A9action%20m%C3%A9tasomatique

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 CONT

Contact metasomatic deposits. During the crystallization of certain magmas a considerable amount of fluid escapes. This fluid may produce widespread changes near the contacts of magma with the surrounding rocks. Where such changes are caused by heat effects, without addition of material from the magma, the resulting deposits are called contact metamorphic. If appreciable material is contributed by the magma, the deposits are termed contact metasomatic.  1, record 14, English, - contact%20metasomatic%20deposit

Record number: 14, Textual support number: 1 OBS

contact-metasomatic: Said of a rock or mineral that has originated through the process of contact metasomatism.  3, record 14, English, - contact%20metasomatic%20deposit

Record number: 14, Textual support number: 2 CONT

Iron-rich skarn deposits ... belong to two main subtypes: (1) those referred to as contact metasomatic or replacement deposits that developed along the margins of igneous intrusions in association with limestone, dolomite, argillaceous sediments and mafic volcanic rocks; and (2) skarns of a stratiform type ....  2, record 14, English, - contact%20metasomatic%20deposit

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 CONT

phlogopite : (...) Mica fréquent des gîtes métasomatiques de contact avec la calcite, ainsi que dans les pegmatites et dans les roches ignées riches en magnésium et pauvres en fer.  1, record 14, French, - g%C3%AEte%20m%C3%A9tasomatique%20de%20contact

Record 14,  Textual support,  Spanish