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BRECHIFICATION [1 record]

Record 1 2005-04-07

English

Subject field(s)
  • Petrography
  • Tectonics
DEF

Formation of a breccia, as by crushing a rock into angular fragments.

CONT

Epigenetic ores, developed in dilatant zones along faults, often show signs of dynamic effects (brecciation, plastic flowage, etc.) due to fault movements during and after mineralization.

CONT

Textures attributable to tectonism include lineation or foliation of chromite and olivine, stretching, boudinage and "pull apart" of chromite grains, brecciation, and mylonitization.

PHR

Brecciation of veins.

French

Domaine(s)
  • Pétrographie
  • Tectonique
DEF

Transformation d'une roche en fragments anguleux, par exemple sous l'effet de l'écrasement.

CONT

[...] les shear zones ou failles de cisaillement [...] jouent à plusieurs reprises dans le temps, avec bréchification du quartz de première génération et minéralisation en arsénopyrite et or [...]

CONT

Les structures qui sont imputables à des déformations tectoniques comprennent les linéations ou foliations définies par les cristaux de chromite et d'olivine; l'étirement, le boudinage et la fragmentation par étirement de grains de chromite; la bréchification; et la mylonitisation.

PHR

Bréchification des épontes.

Spanish

Campo(s) temático(s)
  • Petrografía
  • Tectónica
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