TERMIUM Plus®

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HELICITIC [1 record]

Filter results by subject field Alphabetical list of terms

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Alphabetical list of terms

Record 1 1998-08-10

English

Subject field(s)
  • Petrography
  • Mineralogy
  • Tectonics
DEF

Pertaining to a metamorphic-rock texture consisting of bands of inclusions that indicate original bedding or schistosity of the parent rock and cut through later-formed crystals of the metamorphic rock. The relict inclusions commonly occur in porphyroblasts as curved and contorted strings.

French

Domaine(s)
  • Pétrographie
  • Minéralogie
  • Tectonique
DEF

Se dit d'une structure en hélice, due à une croissance synchrone de mouvements tectoniques.

CONT

[...] la structure hélicitique : certains porphyroblastes pivotent au fur et à mesure de leur croissance et les traînées d'inclusions qu'ils renferment forment des lignes sinueuses (structure en S) [...]

Spanish

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