TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

The process of hydrothermal alteration by which magnesium-rich silicate minerals(e. g. olivine, pyroxenes, and/or amphiboles in dunites, peridotites, and/or other ultrabasic rocks) are converted into or replaced by serpentine minerals.  6, record 1, English, - serpentinization

Record number: 1, Textual support number: 1 CONT

There are many types of alteration, among these may be mentioned ... serpentinization [which] can occur in both ultrabasic rocks and limestones ...  7, record 1, English, - serpentinization

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Transformation en serpentine des minéraux ferromagnésiens, en particulier de l'olivine, dans les roches magmatiques basiques ou ultrabasiques.  4, record 1, French, - serpentinisation

Record number: 1, Textual support number: 1 CONT

[...] l'olivine [...] est un minéral vert [...] facilement attaqué par les agents atmosphériques et les acides qui donnent naissance à deux types d'altération : l'altération ferrugineuse [...], l'altération serpentineuse, plus fréquente dans les roches [...] composées d'olivine.  3, record 1, French, - serpentinisation

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Banks et al.(1992a, 1994) considered both a deep weathering process and hydrothermal alteration to explain the observed clay alteration, but favoured hydrothermal fluids originating from the Permian Oslo Rift and its associated volcanism as the alteration agent.  2, record 2, English, - deep%20weathering%20process

Record number: 2, Textual support number: 1 PHR

Deep chemical weathering.  3, record 2, English, - deep%20weathering%20process

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 PHR

Météorisation chimique profonde.  1, record 2, French, - m%C3%A9t%C3%A9orisation%20en%20profondeur

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

In most deposits, the breccia formed as a sulphide talus at the base of the endogenous mounds that were presumably primary vent sites.  1, record 3, English, - endogenous

Record number: 3, Textual support number: 2 CONT

These [soluble forms of] elements being readily leachable by weak solvents, may be mobilized and involved in the hydrothermal process, and later accumulate under exogene and(or) endogene conditions, or are dispersed in the lithosphere and the hydrosphere.  2, record 3, English, - endogenous

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Dans la plupart des gîtes, les brèches ont formé un talus de sulfures à la base de monticules endogènes qui constituent probablement les sites d'exhalaison primaires.  2, record 3, French, - endog%C3%A8ne

Record number: 3, Textual support number: 2 CONT

Il y a des rythmes dont les causes sont extérieures au dépôt (exogènes) et ceux dont les causes sont intérieures (endogènes).  3, record 3, French, - endog%C3%A8ne

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

Introduction of, or replacement by, pyrite.  3, record 4, English, - pyritization

Record number: 4, Textual support number: 1 CONT

Pyritization is a common process of hydrothermal alteration and often involves the introduction of fine-grained pyrite disseminated as specks in rock adjacent to veins.  3, record 4, English, - pyritization

Record number: 4, Textual support number: 1 OBS

e.g. the replacement of the original material of the hard parts of certain fossil animals and plants by pyrite.  3, record 4, English, - pyritization

Record 4,  Textual support,  French

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

stratafer group: Lithological facies formed by chemical, biogenic, and hydrothermal effusive of exhalative processes, commonly composed of banded chert and quartz interbedded with oxide, sulphide, carbonate, and silicate minerals containing ferrous, nonferrous, and/or precious metals.  1, record 5, English, - hydrothermal%20effusive%20process

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

groupe des stratafers : Faciès lithologique formé par des processus chimiques, biogènes et hydrothermaux effusifs ou exhalatifs, principalement composé de chert et de quartz rubanés interstratifiés de minéraux oxydés, sulfurés, carbonatés et silicatés contenant des métaux ferreux, non ferreux ou précieux.  1, record 5, French, - processus%20hydrothermal%20effusif

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

stratafer group: Lithological facies formed by chemical, biogenic, and hydrothermal effusive of exhalative processes, commonly composed of banded chert and quartz interbedded with oxide, sulphide, carbonate, and silicate minerals containing ferrous, nonferrous, and/or precious metals.  1, record 6, English, - hydrothermal%20exhalative%20process

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

groupe des stratafers : Faciès lithologique formé par des processus chimiques, biogènes et hydrothermaux effusifs ou exhalatifs, principalement composé de chert et de quartz rubanés interstratifiés de minéraux oxydés, sulfurés, carbonatés et silicatés contenant des métaux ferreux, non ferreux ou précieux.  1, record 6, French, - processus%20hydrothermal%20exhalatif

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

A hydrothermal, deuteric, or metamorphic process involving the introduction of, alteration to, or replacement by sericitic muscovite.  4, record 7, English, - sericitization

Record number: 7, Textual support number: 1 CONT

Wall rock alteration is usually confined to footwall rocks. Chloritization and sericitization are the two commonest forms.  5, record 7, English, - sericitization

Record number: 7, Textual support number: 2 CONT

Sericitization of feldspars in the vicinity of carbonate veinlets.  3, record 7, English, - sericitization

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Processus au cours duquel un minéral est altéré en séricite.  4, record 7, French, - s%C3%A9ricitisation

Record number: 7, Textual support number: 1 CONT

La séricitisation forme du mica blanc et du quartz aux dépens des feldspaths.  5, record 7, French, - s%C3%A9ricitisation

Record number: 7, Textual support number: 2 CONT

[...] la séricitisation des feldspaths à proximité des filonnets de carbonates.  6, record 7, French, - s%C3%A9ricitisation

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

Ensemble des phénomènes d'infiltration, de circulation et de résurgence de l'eau de mer dans le plancher océanique.  2, record 8, French, - hydrothermalisme%20marin

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 CONT

The arsenide uranium vein deposits ... were formed by hydrothermal processes, in which the ore constituents were mobilized from formational brines and redeposited in open fractures and cavities.  1, record 9, English, - hydrothermal%20process

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

Les gîtes filoniens d'uranium à arséniures [...] sont le produit de processus hydrothermaux durant lesquels les constituants métallifères ont été entraînés dans des saumures de formation et se sont redéposés dans des fractures ouvertes et des cavités.  1, record 9, French, - processus%20hydrothermal

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

A process of hydrothermal alteration in which feldspar and muscovite are converted to an aggregate of quartz, topaz, tourmaline, and lepidolite(i. e., greisen) by the action of water vapor containing fluorine.  2, record 10, English, - greisenization

Record number: 10, Textual support number: 1 CONT

There are many types of alteration, among these may be mentioned ... greisenization, a frequent form of alteration alongside tin-tungsten and beryllium deposits in granitic rocks or greisses ...  4, record 10, English, - greisenization

Record number: 10, Textual support number: 2 CONT

In the case of peralkaline systems, greisenization is rare and alteration is dominated instead by albitization (sodium metasomatism).  3, record 10, English, - greisenization

Record number: 10, Textual support number: 1 PHR

Extensive greisen alteration.  3, record 10, English, - greisenization

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 CONT

Puis vient une phase pneumatolytique qui donne trois formes d'altération : la tourmalinisation, la greisenisation et la kaolinisation.  3, record 10, French, - greisenisation

Record number: 10, Textual support number: 2 CONT

Dans le cas des systèmes hyperalcalins, la greisenification est rare et l'altération est plutôt caractérisée par une albitisation (métasomatisme sodique).  2, record 10, French, - greisenisation

Record number: 10, Textual support number: 1 PHR

Forte greisenification.  2, record 10, French, - greisenisation

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

Hydrothermal alteration of ore deposits is interpreted by Hemley and Jones(1964) as a process of hydrogen metasomatism, by which hydrogen ions are added to the rock, a mole equivalent of cations is released, and the(OH-/H+) ratio in the solution is increased.... In general, alteration zones display a net loss of base equivalents(metal cations).  3, record 11, English, - alteration%20zone

Record number: 11, Textual support number: 2 CONT

Geological mapping of alteration zones near Cu Zn deposits in the Noranda area in Quebec.  4, record 11, English, - alteration%20zone

Record number: 11, Textual support number: 3 CONT

Like the alteration, the mineralization also occurs in concentric zones ... According to Lowell & Guilbert the zones of mineralization may be outlined as follows. (a) Innermost alteration zone. ... (b) Inner alteration zone. ... (c) Intermediate alteration zone. ... (d) Outer alteration zone.  2, record 11, English, - alteration%20zone

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 CONT

Dans les parties comprimées de la voûte les fissures ont tendance à se refermer, l'altération est réduite ainsi que la tendance à la fragmentation. Au cours de la reconnaissance du dépôt, il faut une zone d'altération précise qu'on sait être au contact des veines.  2, record 11, French, - zone%20d%27alt%C3%A9ration

Record number: 11, Textual support number: 2 CONT

En étudiant les zones d'altération à côté de gisements de minéraux connus, le prospecteur apprend à reconnaître les genres les plus usuels [...]  3, record 11, French, - zone%20d%27alt%C3%A9ration

Record number: 11, Textual support number: 1 OBS

altération: Transformation chimique des constituants des roches sous l'action d'agents externes.  2, record 11, French, - zone%20d%27alt%C3%A9ration

Record 11,  Textual support,  Spanish