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SUBVOLCANIC ROCK [1 record]

Record 1 2011-02-22

English

Subject field(s)
  • Petrography
  • Vulcanology and Seismology
DEF

An igneous rock that has risen from the depths as magma but solidified mainly as such minor intrusions as dikes and sills beneath the surface.

CONT

Hypovolcanic rocks (dikes and sills) set up next to the surface.

OBS

subvolcanic rock: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
  • Volcanologie et sismologie
DEF

Roche de texture intermédiaire entre une roche de profondeur et une roche effusive.

CONT

Classification [...] des gisements de cuivre. [...] Gîtes associés à des roches volcaniques et subvolcaniques, comme ceux à lentilles et couches dans des tufs surmontant des coulées de rhyolite [...] ou le type filonien dans des laves andésitiques [...]

CONT

[...] des roches hypovolcaniques (roches de semi-profondeur) [...] ont été mises à jour par l'érosion près de Mandailles; [...]

OBS

roche hypovolcanique; roche de semi-profondeur : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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