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POLYMICT BRECCIA [5 records]

Record 1 2011-05-16

English

Subject field(s)
  • Astronomy
  • Petrography
DEF

A breccia formed from more than one source rock.

OBS

As opposed to "monomict breccia."

French

Domaine(s)
  • Astronomie
  • Pétrographie
DEF

Brèche [...] formée de fragments de taille et de nature différentes.

CONT

[...] les météorites bréchiques polymictes sont formées de fragments divers [...]

Spanish

Save record 1

Record 2 2010-10-15

English

Subject field(s)
  • Astronomy
  • Petrography
DEF

A breccia formed by fracturing and mixing of material from a single source without admixture of unrelated material.

OBS

As opposed to "polymict breccia. "

French

Domaine(s)
  • Astronomie
  • Pétrographie
OBS

En ce qui concerne l'origine des météorites pierreuses, il est aussi très important de savoir qu'un grand nombre d'entre elles sont bréchiques. Les unes doivent cette structure à un broyage post-formationnel et sont alors composées d'un seul matériau : ce sont les monomictes.

Spanish

Save record 2

Record 3 2008-09-05

English

Subject field(s)
  • Petrography
CONT

Strongly shocked gneiss fragments from the allochthonous polymict breccia of the 23 Ma old Haughton impact crater were studied by optical microscopy, electron probe microanalysis(EPMA) and analytical transmission electron microscopy(ATEM).

OBS

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

French

Domaine(s)
  • Pétrographie
OBS

La métasomatose a eu lieu après l'impact : elle affecte les roches ayant subi le choc [...]. La température relativement élevée de la phase fluide et la restriction des zones riches en Ca aux roches affectées par l'impact montrent que la métasomatose était liée à l'impact.

OBS

gneiss ayant subi un choc : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 3

Record 4 2008-07-24

English

Subject field(s)
  • Petrography
DEF

[Said of] multiple rock-types combined in a single rock sample.

OBS

In lunar geology, the term is applied to breccias containing fragments of other breccias, e. g., "polymict breccia. "

OBS

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

French

Domaine(s)
  • Pétrographie
DEF

Se dit des roches sédimentaires terrigènes composées de fragments de roches de natures diverses.

PHR

Galet polymictique.

Spanish

Save record 4

Record 5 1998-09-03

English

Subject field(s)
  • Petrography
  • Geology
  • Geochemistry
DEF

Breccia in which the fragments have a variety of compositions ...

Key term(s)
  • polymictic breccia

French

Domaine(s)
  • Pétrographie
  • Géologie
  • Géochimie
DEF

Brèche dont les constituants sont d'origines différentes.

Spanish

Save record 5

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