TERMIUM Plus®

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

H2O MAGMATIQUE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-02-03

English

Subject field(s)
  • Petrography
DEF

A black or dark-colored volcanic glass, usually of rhyolite composition, characterized by conchoidal fracture ... sometimes banded or [with] microlites.

CONT

Volcanic glass, or obsidian, is formed when the intense heat of a volcano fuses sand. Hard, black, and shiny, obsidian forms sharp edges when broken and can be easily worked to make bowls, mirrors, jewellery, knives, arrows, and spearheads. The Native peoples of western Canada traded obsidian from the Yukon and Alaska up and down the Pacific coast.

OBS

obsidian: Usage of this term goes back as far as Pliny, who described the rock from Ethiopia.

OBS

Iceland agate: a jewelry term.

OBS

hyalopsite: obsolete name for obsidian.

French

Domaine(s)
  • Pétrographie
DEF

Roche magmatique effusive entièrement vitreuse, noire, à cassure lisse conchoïdale brillante, à composition chimique de rhyolite, ou parfois de trachyte, anhydre ou presque(H2O<3 %) ;[...]

CONT

Le verre volcanique, ou obsidienne, se forme lorsque la chaleur intense d’un volcan fait fondre le sable. L’obsidienne, qui est dure, noire et luisante, a des bords tranchants lorsqu’elle se casse et peut être facilement travaillée pour faire bols, miroirs, bijoux, couteaux, flèches et pointes de lance. Les peuples autochtones de l’ouest du Canada échangeaient l’obsidienne du Yukon et de l’Alaska le long de la côte du Pacifique.

OBS

obsidienne : de Obsidius, personnage qui, selon Pline, aurait découvert cette roche.

Spanish

Campo(s) temático(s)
  • Petrografía
DEF

Roca volcánica, vítrea, con estructura de microesferolitos.

CONT

La obsidiana, de la cual existen algunas variedades, es una lava que presenta el aspecto de un vidrio negro o muy oscuro y que, al fragmentarse, tiene superficies concoideas.

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Record 2 2012-01-16

English

Subject field(s)
  • Hydrology and Hydrography
  • Geochemistry
DEF

Water brought to the Earth's surface from great depths by the upward movement of intrusive igneous rocks.

OBS

Magmatic H2O

French

Domaine(s)
  • Hydrologie et hydrographie
  • Géochimie
DEF

Eau amenée des grandes profondeurs à la surface terrestre par le mouvement ascendant des roches ignées intrusives.

OBS

H2O magmatique

Spanish

Campo(s) temático(s)
  • Hidrología e hidrografía
  • Geoquímica
DEF

Agua impulsada hasta la superficie terrestre desde gran profundidad, por el movimiento ascendente de rocas ígneas intrusivas.

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