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GABBRO [1 record]

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Record 1 2004-11-29

English

Subject field(s)
  • Petrography
DEF

A group of dark-colored, basic intrusive igneous rocks, composed principally of basic plagioclase (commonly labradorite or bytownite) and clinopyroxene (augite), with or without olivine or orthopyroxene ...

OBS

It is the approximate intrusive equivalent of basalt.

French

Domaine(s)
  • Pétrographie
DEF

Roche éruptive grenue à pyroxène.

CONT

Le gabbro est une roche grenue formée de feldspaths plagioclases plus calciques que sodiques (labrador, bytownite, anorthite) associés à un pyroxène [...] Les gabbros se présentent soit en massifs indépendants, soit associés à d'autres roches basiques [...]

Spanish

Campo(s) temático(s)
  • Petrografía
DEF

Roca plutónica compuesta de plagioclasas y minerales ferromagnésicos.

CONT

Los gabros son rocas pesadas (d=3), granudas y moteadas, de color entre verde y gris. Constan de plagioclasas básicas, de piroxenos y de olivino, anfíboles y otros minerales que les confieren su color.

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