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MICRODIORITE [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-01-28

English

Subject field(s)
  • Petrography
DEF

A medium-grained igneous rock characterized by the mineral assemblage and chemical composition of diorite.

OBS

Such terms as "microdiorite, ""microgranite, "and "microsyenite" are used by Hatch and Wells for rocks with grain diameters between 0. 5 and 0. 05 mm.

OBS

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

French

Domaine(s)
  • Pétrographie
DEF

Roche magmatique plutonique à structure microgrenue, souvent en filons ou en bordure des massifs dioritiques [...] composée essentiellement de plagioclase et de hornblende verte avec, parfois, un peu de biotite.

CONT

Microsyénites, microdiorites (le porphyre bleu de l'Esterel ou porphyre bleu des Romains ou estérellite est une microdiorite quartzifère) [...]

OBS

microdiorite : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Campo(s) temático(s)
  • Petrografía
DEF

Diorita de grano muy fino, que se ha formado a menor profundidad que la diorita propiamente dicha.

Save record 1

Record 2 2007-09-17

English

Subject field(s)
  • Petrography
OBS

microdiorite dyke : term used at Natural Resources Canada-Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
OBS

dyke de microdiorite : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 2

Record 3 2006-11-15

English

Subject field(s)
  • Petrography
CONT

South of Tommy Lake a microdiorite sill, 100 metres wide, has been mapped.... The microdiorite is fine grained, grey-green to brown, variably magnetic... A second microdiorite sill is exposed on a knoll south of the Tsacha grid. In this area, the microdiorite appears to grade into andesite dikes with calcite amygdules and minor augite phenocrysts.

OBS

microdiorite sill : term used at Natural Resources Canada-Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
OBS

... environ 5 % de gabbro/microgabbro et diorite/microdiorite sont présents. Les analyses géochimiques de ces roches intrusives suggèrent que plusieurs d'entre elles sont des filons-couches comagmatiques avec les roches volcaniques.

OBS

filon-couche de microdiorite : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 3

Record 4 2004-05-05

English

Subject field(s)
  • Petrography
OBS

Such terms as "microdiorite", microgranite", and "microsyenite" are used by Hatchand Wells for rocks with grain diameters between 0. 5 and 0. 05 mm.

French

Domaine(s)
  • Pétrographie
DEF

Roche hypo-abyssique de même composition que la syénite, mais à texture porphyrique, microgrenue, quelquefois pegmatitique.

CONT

Microsyénites, microdiorites, microgabbros.

Spanish

Save record 4

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